
The Boeing CIM-10 Bomarc ("Boeing Michigan Aeronautical Research Center") (IM-99 Weapon System prior to September 1962) was a supersonic
ramjet
A ramjet is a form of airbreathing jet engine that requires forward motion of the engine to provide air for combustion. Ramjets work most efficiently at supersonic speeds around and can operate up to .
Ramjets can be particularly appropriat ...
powered long-range
surface-to-air missile
A surface-to-air missile (SAM), also known as a ground-to-air missile (GTAM) or surface-to-air guided weapon (SAGW), is a missile designed to be launched from the ground or the sea to destroy aircraft or other missiles. It is one type of anti-ai ...
(SAM) used during the
Cold War
The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
for the air defense of North America. In addition to being the first operational long-range SAM and the first operational pulse doppler aviation radar,
[Tactical missile aerodynamics, Volume 141. P17. Michael J. Hemsch, American Institute of Aeronautics and Astronautics. American Institute of Aeronautics and Astronautics, 1992] it was the only SAM deployed by the
United States Air Force
The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...
.
Stored horizontally in a launcher shelter with a movable roof, the missile was erected, fired vertically using
rocket boosters to high altitude, and then tipped over into a horizontal Mach 2.5 cruise powered by
ramjet
A ramjet is a form of airbreathing jet engine that requires forward motion of the engine to provide air for combustion. Ramjets work most efficiently at supersonic speeds around and can operate up to .
Ramjets can be particularly appropriat ...
engines. This lofted trajectory allowed the missile to operate at a maximum range as great as . Controlled from the ground for most of its flight, when it reached the target area it was commanded to begin a dive, activating an onboard
active radar homing
Active radar homing (ARH) is a missile guidance method in which a missile contains a radar transceiver (in contrast to semi-active radar homing, which uses only a passive radar, receiver) and the electronics necessary for it to find and track it ...
seeker for
terminal guidance
In the field of weaponry, terminal guidance refers to any guidance system that is primarily or solely active during the "terminal phase", just before the weapon impacts its target. The term is generally used in reference to missile guidance syst ...
. A radar
proximity fuse
A Proximity Fuse (also VT fuse or "variable time fuze") is a fuse that detonates an explosive device automatically when it approaches within a certain distance of its target. Proximity fuses are designed for elusive military targets such as air ...
detonated the warhead, either a large conventional explosive or the
W40 nuclear warhead.
The Air Force originally planned for a total of 52 sites covering most of the major cities and industrial regions in the US. The
United States Army
The United States Army (USA) is the primary Land warfare, land service branch of the United States Department of Defense. It is designated as the Army of the United States in the United States Constitution.Article II, section 2, clause 1 of th ...
was deploying their own systems at the same time, and the two services fought constantly both in political circles and in the press. Development dragged on, and by the time it was ready for deployment in the late 1950s, the nuclear threat had moved from manned bombers to the
intercontinental ballistic missile
An intercontinental ballistic missile (ICBM) is a ballistic missile with a range (aeronautics), range greater than , primarily designed for nuclear weapons delivery (delivering one or more Thermonuclear weapon, thermonuclear warheads). Conven ...
(ICBM). By this time the Army had successfully deployed the much shorter range
Nike Hercules
The Nike Hercules, initially designated SAM-A-25 and later MIM-14, was a surface-to-air missile (SAM) used by U.S. and NATO armed forces for medium- and high-altitude long-range air defense. It was normally armed with the W31 nuclear warhead, bu ...
that they claimed filled any possible need through the 1960s, in spite of Air Force claims to the contrary.
As testing continued, the Air Force reduced its plans to sixteen sites, and then again to eight with an additional two sites in Canada. The first US site was declared operational in 1959, but with only a single working missile. Bringing the rest of the missiles into service took years, by which time the system was obsolete. Deactivations began in 1969 and by 1972 all Bomarc sites had been shut down. A small number were used as target drones, and only a few remain on display today.
Design and development
Initial studies
During
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, the
US Army Air Force (USAAF) concluded that existing
anti-aircraft gun
Anti-aircraft warfare (AAW) is the counter to aerial warfare and includes "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It encompasses surface-based, subsurface ( submarine-launched), and air-ba ...
s, only marginally effective against existing generations of propeller-driven aircraft, would not be effective at all against the emerging jet-powered designs. Like the Germans and British before them, they concluded the only successful defence would be to use guided weapons.
As early as 1944 the
United States Army
The United States Army (USA) is the primary Land warfare, land service branch of the United States Department of Defense. It is designated as the Army of the United States in the United States Constitution.Article II, section 2, clause 1 of th ...
started exploring anti-aircraft missiles, examining a variety of concepts. At the time, two basic concepts appeared possible; one would use a short-range rocket that flew directly at the target from below following a course close to the line-of-sight, and the other would fly up to the target's altitude and then tip over and fly horizontally towards the target like a
fighter aircraft
Fighter aircraft (early on also ''pursuit aircraft'') are military aircraft designed primarily for air-to-air combat. In military conflict, the role of fighter aircraft is to establish air supremacy, air superiority of the battlespace. Domina ...
. As both concepts seemed promising, the Army Air Force was given the task of developing the airplane-like design, while the Army Ordnance Department was given the more ballistic collision-course concept. Official requirements were published in 1945.
Official requirements were published in 1945;
Bell Laboratories
Nokia Bell Labs, commonly referred to as ''Bell Labs'', is an American industrial research and development company owned by Finnish technology company Nokia. With headquarters located in Murray Hill, New Jersey, the company operates several lab ...
won the Ordnance contract for a short-range line-of-sight weapon under Project Nike, while a team of players led by
Boeing
The Boeing Company, or simply Boeing (), is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, and missiles worldwide. The company also provides leasing and product support s ...
won the contract for a long-range design known as
Ground-to-Air Pilotless Aircraft, or GAPA. GAPA moved to the
United States Air Force
The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...
when that branch was formed in 1947. In 1946, the USAAF also started two early research projects into anti-missile systems in Project Thumper (MX-795) and Project Wizard (MX-794).
Bomarc A
Formally organized in 1946 under USAAF project MX-606, by 1950 Boeing had launched more than 100 test rockets in various configurations, all under the designator XSAM-A-1 GAPA. The tests were very promising, and Boeing received a USAF contract in 1949 to develop a production design under project MX-1599.
[Gibson 1996, pp. 200–201.]
The MX-1599 missile was to be a ramjet-powered, nuclear-armed long-range surface-to-air missile to defend the Continental United States from high-flying bombers. The
Michigan Aerospace Research Center (MARC) was added to the project soon afterward, and this gave the new missile its name Bomarc (for Boeing and MARC). In 1951, the USAF decided to emphasize its point of view that missiles were nothing else than pilotless aircraft by assigning aircraft designators to its missile projects, and anti-aircraft missiles received F-for-Fighter designations. The Bomarc became the F-99.
By this time, the Army's Nike project was progressing well and would enter operational service in 1953. This led the Air Force to begin a lengthy series of attacks on the Army in the press, a common occurrence at the time known as "
policy by press release". When the Army released its first official information on Ajax to the press, the Air Force responded by leaking information on BOMARC to
Aviation Week
''Aviation Week & Space Technology'', often abbreviated ''Aviation Week'' or ''AW&ST'', is the flagship magazine of the Aviation Week Network, a division of Informa. The weekly magazine is available in print and online, reporting on the aeros ...
, and continued to denigrate Nike in the press over the next few years, in one case showing a graphic of Washington being destroyed by nuclear bombs that Ajax failed to stop.
Tests of the XF-99 test vehicles began in September 1952 and continued through early 1955. The XF-99 tested only the liquid-fueled booster rocket, which would accelerate the missile to ramjet ignition speed. In February 1955, tests of the XF-99A propulsion test vehicles began. These included live ramjets, but still had no guidance system or warhead. The designation YF-99A had been reserved for the operational test vehicles. In August 1955, the USAF discontinued the use of aircraft-like type designators for missiles, and the XF-99A and YF-99A became XIM-99A and YIM-99A, respectively. Originally the USAF had allocated the designation IM-69, but this was changed (possibly at Boeing's request to keep number 99) to IM-99 in October 1955.
By this time, Ajax was widely deployed around the United States and some overseas locations, and the Army was beginning to develop its much more powerful successor,
Nike Hercules
The Nike Hercules, initially designated SAM-A-25 and later MIM-14, was a surface-to-air missile (SAM) used by U.S. and NATO armed forces for medium- and high-altitude long-range air defense. It was normally armed with the W31 nuclear warhead, bu ...
. Hercules was an existential threat to BOMARC, as its much greater range and nuclear warhead filled many of the roles that BOMARC was designed for. A new round of fighting in the press broke out, capped by an article in ''
The New York Times
''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
'' entitled "Air Force Calls Army Nike Unfit To Guard Nation".
In October 1957, the first YIM-99A production-representative prototype flew with full guidance, and succeeded in passing the target within the intended warhead's destructive radius. In late 1957, Boeing received the production contract for the IM-99A Bomarc A, and in September 1959, the first IM-99A squadron became operational.
The IM-99A had an operational radius of and was designed to fly at
Mach
The Mach number (M or Ma), often only Mach, (; ) is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a Boundary (thermodynamic), boundary to the local speed of sound.
It is named after the Austrian physi ...
2.5–2.8 at a cruising altitude of . It was long and weighed . Its armament was either a conventional warhead or a
W40 nuclear warhead (7–10
kiloton
TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion. A ton of TNT equivalent is a unit of energy defined by convention to be (). It is the approximate energy released in the det ...
yield). A
liquid-fuel rocket engine boosted the Bomarc to Mach 2, when its
Marquardt RJ43-MA-3 ramjet
A ramjet is a form of airbreathing jet engine that requires forward motion of the engine to provide air for combustion. Ramjets work most efficiently at supersonic speeds around and can operate up to .
Ramjets can be particularly appropriat ...
engines, fueled by 80-octane gasoline, would take over for the remainder of the flight. This was the same model of engine used to power the
Lockheed X-7, the
Lockheed AQM-60 Kingfisher
The AQM-60 Kingfisher, originally designated XQ-5, was a target drone version of the USAF's Lockheed X-7, X-7 ramjet test aircraft built by the Lockheed Corporation. The aircraft was designed by Kelly Johnson (engineer), Kelly Johnson, who later ...
drone used to test air defenses, and the
Lockheed D-21
The Lockheed D-21 is an American supersonic Aerial reconnaissance, reconnaissance unmanned aerial vehicle, drone. The D-21 was initially designed to be launched from the back of an Lockheed A-12#M-21, M-21 carrier aircraft, a variant of the Loc ...
launched from the back of an
M-21, although the Bomarc and Kingfisher engines used different materials due to the longer duration of their flights.
Operational units

The operational IM-99A missiles were based horizontally in semi-hardened shelters, nicknamed "coffins". After the launch order, the shelter's roof would slide open, and the missile raised to the vertical. After the missile was supplied with fuel for the booster rocket, it would be launched by the Aerojet General LR59-AJ-13 booster. After sufficient speed was reached, the Marquardt RJ43-MA-3 ramjets would ignite and propel the missile to its cruise speed of Mach 2.8 at an altitude of .
When the Bomarc was within of the target, its own Westinghouse AN/DPN-34 radar guided the missile to the interception point. The maximum range of the IM-99A was , and it was fitted with either a conventional high-explosive or a 10 kiloton W-40 nuclear fission warhead.
The Bomarc relied on the
Semi-Automatic Ground Environment
The Semi-Automatic Ground Environment (SAGE) was a system of mainframe computer, large computers and associated computer network, networking equipment that coordinated data from many radar sites and processed it to produce a single unified image ...
(SAGE), an automated control system used by
NORAD
North American Aerospace Defense Command (NORAD ; , CDAAN), known until March 1981 as the North American Air Defense Command, is a combined organization of the United States and Canada that provides aerospace warning, air sovereignty, and pr ...
for detecting, tracking and intercepting enemy
bomber aircraft. SAGE allowed for remote launching of the Bomarc missiles, which were housed in a constant combat-ready basis in individual launch shelters in remote areas. At the height of the program, there were 14 Bomarc sites located in the US and two in Canada.
Bomarc B
The liquid-fuel booster of the Bomarc A had several drawbacks. It took two minutes to fuel before launch, which could be a long time in high-speed intercepts, and its
hypergolic propellants (hydrazine and nitric acid) were very dangerous to handle, leading to several serious accidents.
As soon as high-thrust
solid-fuel rocket
A solid-propellant rocket or solid rocket is a rocket with a rocket engine that uses Rocket propellant#Solid chemical propellants, solid propellants (fuel/oxidizer). The earliest rockets were solid-fuel rockets powered by gunpowder. The incepti ...
s became a reality in the mid-1950s, the USAF began to develop a new solid-fueled Bomarc variant, the IM-99B Bomarc B. It used a
Thiokol
Thiokol was an American corporation concerned initially with rubber and related chemicals, and later with rocket and missile propulsion systems. Its name is a portmanteau of the Greek words for sulfur () and glue (), an allusion to the company ...
XM51 booster, and also had improved Marquardt RJ43-MA-7 (and finally the RJ43-MA-11) ramjets. The first IM-99B was launched in May 1959, but problems with the new propulsion system delayed the first fully successful flight until July 1960, when a supersonic
MQM-15A Regulus II drone was intercepted. Because the new booster required less space in the missile, more ramjet fuel could be carried, thus increasing the range to . The terminal homing system was also improved, using the world's first
pulse Doppler search radar, the Westinghouse AN/DPN-53.
All Bomarc Bs were equipped with the W-40 nuclear warhead. In June 1961, the first IM-99B squadron became operational, and Bomarc B quickly replaced most Bomarc A missiles.
On 23 March 1961, a Bomarc B successfully intercepted a Regulus II cruise missile flying at , thus achieving the highest interception in the world up to that date.
Boeing built 570 Bomarc missiles between 1957 and 1964, 269 CIM-10A, 301 CIM-10B.

In September 1958 Air Research & Development Command decided to transfer the Bomarc program from its testing at Cape Canaveral Air Force Station to a new facility on
Santa Rosa Island, south of Eglin AFB
Hurlburt Field
Hurlburt Field is a United States Air Force installation located in Okaloosa County, Florida, immediately west of the town of Mary Esther. It is part of the greater Eglin Air Force Base reservation and is home to Headquarters Air Force S ...
on the
Gulf of Mexico
The Gulf of Mexico () is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southw ...
. To operate the facility and to provide training and operational evaluation in the missile program,
Air Defense Command
Aerospace Defense Command was a major command (military formation), command of the United States Air Force, responsible for air defense of the continental United States. It was activated in 1968 and disbanded in 1980. Its predecessor, Air De ...
established the 4751st Air Defense Wing (Missile) (4751st ADW) on 15 January 1958. The first launch from Santa Rosa took place on 15 January 1959.
Operational history
In 1955, to support a program which called for 40 squadrons of BOMARC (120 missiles to a squadron for a total of 4,800 missiles), ADC reached a decision on the location of these 40 squadrons and suggested operational dates for each. The sequence was as follows: ... l.
McGuire 1/60 2.
Suffolk
Suffolk ( ) is a ceremonial county in the East of England and East Anglia. It is bordered by Norfolk to the north, the North Sea to the east, Essex to the south, and Cambridgeshire to the west. Ipswich is the largest settlement and the county ...
2/60 3.
Otis 3/60 4.
Dow 4/60 5.
Niagara Falls
Niagara Falls is a group of three waterfalls at the southern end of Niagara Gorge, spanning the Canada–United States border, border between the Provinces and territories of Canada, province of Ontario in Canada and the state of New York (s ...
1/61 6.
Plattsburgh 1/61 7.
Kinross
Kinross (, ) is a burgh in Perth and Kinross, Scotland, around south of Perth, Scotland, Perth and around northwest of Edinburgh. It is the traditional county town of the Counties of Scotland, historic county of Kinross-shire.
History
Kinro ...
2/61 8.
K.I. Sawyer 2/61 9.
Langley 2/61 10.
Truax 3/61 11.
Paine 3/61 12.
Portland 3/61 ... At the end of 1958, ADC plans called for construction of the following BOMARC bases in the following order: l. McGuire 2. Suffolk 3. Otis 4. Dow 5. Langley 6. Truax 7. Kinross 8.
Duluth
Duluth ( ) is a Port, port city in the U.S. state of Minnesota and the county seat of St. Louis County, Minnesota, St. Louis County. Located on Lake Superior in Minnesota's Arrowhead Region, the city is a hub for cargo shipping. The population ...
9.
Ethan Allen
Ethan Allen ( – February 12, 1789) was an American farmer, writer, military officer and politician. He is best known as one of the founders of Vermont and for the capture of Fort Ticonderoga during the American Revolutionary War, and wa ...
10. Niagara Falls 11. Paine 12.
Adair 13.
Travis 14.
Vandenberg 15. San Diego 16.
Malmstrom 17.
Grand Forks 18.
Minot 19.
Youngstown
Youngstown is a city in Mahoning County, Ohio, United States, and its county seat. It is the List of municipalities in Ohio, 11th-most populous city in Ohio with a population of 60,068 at the 2020 United States census, 2020 census. The Mahoning ...
20.
Seymour-Johnson 21.
Bunker Hill 22. Sioux Falls 23.
Charleston 24.
McConnell 25.
Holloman 26.
McCoy 27.
Amarillo 28.
Barksdale 29.
Williams.
United States
The first USAF operational Bomarc squadron was the
46th Air Defense Missile Squadron (ADMS), organized on 1 January 1959 and activated on 25 March. The 46th ADMS was assigned to the
New York Air Defense Sector at
McGuire Air Force Base, New Jersey. The training program, under the
4751st Air Defense Wing used technicians acting as instructors and was established for a four-month duration. Training included missile maintenance; SAGE operations and launch procedures, including the launch of an unarmed missile at Eglin. In September 1959 the squadron assembled at their permanent station, the Bomarc site near McGuire AFB, and trained for operational readiness. The first Bomarc-A were used at McGuire on 19 September 1959 with Kincheloe AFB getting the first operational IM-99Bs. While several of the squadrons replicated earlier fighter interceptor unit numbers, they were all new organizations with no previous historical counterpart.
ADC's initial plans called for some 52 Bomarc sites around the United States with 120 missiles each but as defense budgets decreased during the 1950s the number of sites dropped substantially. Ongoing development and reliability problems didn't help, nor did Congressional debate over the missile's usefulness and necessity. In June 1959, the Air Force authorized 16 Bomarc sites with 56 missiles each; the initial five would get the IM-99A with the remainder getting the IM-99B. However, in March 1960, HQ USAF cut deployment to eight sites in the United States and two in Canada.
Bomarc incident
Within a year of operations, a Bomarc A with a nuclear warhead caught fire at
McGuire AFB on 7 June 1960 after its on-board helium tank exploded. While the missile's explosives did not detonate, the heat melted the warhead and released plutonium, which the fire crews spread. The Air Force and the
Atomic Energy Commission cleaned up the site and covered it with concrete. This was the only major incident involving the weapon system.
The site remained in operation for several years following the fire. Since its closure in 1972, the area has remained off limits, primarily due to low levels of plutonium contamination. Between 2002 and 2004, 21,998 cubic yards of contaminated debris and soils were shipped to what was then known as
Envirocare, located in Utah.
Modification and deactivation
In 1962, the US Air Force started using modified A-models as drones; following the October 1962 tri-service redesignation of aircraft and weapons systems they became CQM-10As. Otherwise the air defense missile squadrons maintained alert while making regular trips to Santa Rosa Island for training and firing practice. After the inactivation of the 4751st ADW(M) on 1 July 1962 and transfer of Hurlburt to
Tactical Air Command
Tactical Air Command (TAC) is an inactive United States Air Force organization. It was a List of Major Commands of the United States Air Force, Major Command of the United States Air Force, established on 21 March 1946 and headquartered at Lang ...
for air commando operations the 4751st Air Defense Squadron (Missile) remained at Hurlburt and Santa Rosa Island for training purposes.
In 1964, the liquid-fueled Bomarc-A sites and squadrons began to be deactivated. The sites at Dow and Suffolk County closed first. The remainder continued to be operational for several more years while the government started dismantling the air defense missile network. Niagara Falls was the first BOMARC B installation to close, in December 1969; the others remained on alert through 1972. In April 1972, the last Bomarc B in U.S. Air Force service was retired at McGuire and the 46th ADMS inactivated
and the base was deactivated.

In the era of the intercontinental ballistic missiles the Bomarc, designed to intercept relatively slow manned bombers, had become a useless asset. The remaining Bomarc missiles were used by all armed services as high-speed target drones for tests of other air-defense missiles. The Bomarc A and Bomarc B targets were designated as CQM-10A and CQM-10B, respectively.
Following the accident, the McGuire complex has never been sold or converted to other uses and remains in Air Force ownership, making it the most intact site of the eight in the US. It has been nominated to the National Register of Historic Sites.
Canada
The Bomarc Missile Program was highly controversial in Canada.
[
] The
Progressive Conservative government of
Prime Minister
A prime minister or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. A prime minister is not the head of state, but r ...
John Diefenbaker
John George Diefenbaker (September 18, 1895 – August 16, 1979) was the 13th prime minister of Canada, serving from 1957 to 1963. He was the only Progressive Conservative Party of Canada, Progressive Conservative party leader between 1930 an ...
initially agreed to deploy the missiles, and shortly thereafter controversially scrapped the
Avro Arrow
The Avro Canada CF-105 Arrow was a Delta wing, delta-winged interceptor aircraft designed and built by Avro Canada. The CF-105 held the promise of Mach number, Mach 2 speeds at altitudes exceeding and was intended to serve as the Royal ...
, a supersonic manned interceptor aircraft, arguing that the missile program made the Arrow unnecessary.
Initially, it was unclear whether the missiles would be equipped with nuclear warheads. By 1960 it became known that the missiles were to have a nuclear payload, and a debate ensued about whether Canada should accept nuclear weapons.
[
] Ultimately, the Diefenbaker government decided that the Bomarcs should not be equipped with nuclear warheads.
[
] The dispute split the Diefenbaker
Cabinet, and led to the collapse of the government in 1963.
The Official Opposition and
Liberal Party
The Liberal Party is any of many political parties around the world.
The meaning of ''liberal'' varies around the world, ranging from liberal conservatism on the right to social liberalism on the left. For example, while the political systems ...
leader
Lester B. Pearson
Lester Bowles Pearson (23 April 1897 – 27 December 1972) was a Canadian politician, diplomat, statesman, and scholar who served as the 14th prime minister of Canada from 1963 to 1968. He also served as Leader of the Liberal Party of C ...
originally was against nuclear missiles, but reversed his personal position and argued in favour of accepting nuclear warheads.
[
] He won the
1963 election, largely on the basis of this issue, and his new Liberal government proceeded to accept nuclear-armed Bomarcs, with the first being deployed on 31 December 1963.
["Special to The Star: Canada's Bomarcs get atom warheads." ''The Toronto Daily Star,'' 2 January 1964, pp. 1, 4.] When the nuclear warheads were deployed, Pearson's wife, Maryon, resigned her honorary membership in the anti-nuclear weapons group, Voice of Women.
Canadian operational deployment of the Bomarc involved the formation of two specialized Surface/Air Missile squadrons. The first to begin operations was No. 446 SAM Squadron at
RCAF Station North Bay, which was the command and control center for both squadrons.
With construction of the compound and related facilities completed in 1961, the squadron received its Bomarcs in 1961, without nuclear warheads.
The squadron became fully operational from 31 December 1963, when the nuclear warheads arrived, until disbanding on 31 March 1972. All the warheads were stored separately and under control of Detachment 1 of the USAF 425th Munitions Maintenance Squadron at
Stewart Air Force Base. During operational service, the Bomarcs were maintained on stand-by, on a 24-hour basis, but were never fired, although the squadron test-fired the missiles at Eglin AFB, Florida on annual winter retreats.
[Nicks et al. 1997, pp. 84–85.]
No. 447 SAM Squadron operating out of RCAF Station
La Macaza, Quebec, was activated on 15 September 1962 although warheads were not delivered until late 1963. The squadron followed the same operational procedures as No. 446, its sister squadron. With the passage of time the operational capability of the 1950s-era Bomarc system no longer met modern requirements; the Department of National Defence deemed that the Bomarc missile defense was no longer a viable system, and ordered both squadrons to be stood down in 1972. The bunkers and ancillary facilities remain at both former sites.
[Nicks et al. 1997, pp. 85–87.]
Variants

* XF-99 (experimental for booster research)
* XF-99A/XIM-99A (experimental for ramjet research)
* YF-99A/YIM-99A (service-test)
* IM-99A/CIM-10A (initial production)
* IM-99B/CIM-10B ("advanced"
["IM-99A Bases Manual". ''Boeing: Pilotless Aircraft Division'' (Seattle, Washington), 12 March 1959.])
* CQM-10A (target drone developed from CIM-10A)
["Factsheets : Boeing XF-99."](_blank)
''Nationalmuseum.af.mil''. Retrieved: 18 September 2013.
* CQM-10B (target drone developed from CIM-10B)
Operators
; /
*
Royal Canadian Air Force
The Royal Canadian Air Force (RCAF; ) is the air and space force of Canada. Its role is to "provide the Canadian Forces with relevant, responsive and effective airpower". The RCAF is one of three environmental commands within the unified Can ...
from 1955 to 1968 /
Canadian Forces
The Canadian Armed Forces (CAF; , FAC) are the unified Military, military forces of Canada, including sea, land, and air commands referred to as the Royal Canadian Navy, Canadian Army and the Royal Canadian Air Force. Under the ''National Defenc ...
from 1968 to 1972
:
446 SAM Squadron: 28 IM-99B,
CFB North Bay,
Ontario
Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...
1962–1972
:: Bomarc site located at
:
447 SAM Squadron: 28 IM-99B, La Macaza, Quebec (
La Macaza – Mont Tremblant International Airport
Mont-Tremblant International Airport (officially La Macaza – Mont-Tremblant International and formerly Rivière Rouge – Mont-Tremblant International Airport) is a single runway airport located in the township of La Macaza, Quebec, La Macaza ...
) 1962–1972
:: Bomarc site located at (Approximately)
;
*
United States Air Force
The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...
Air (later Aerospace) Defense Command
:
6th Air Defense Missile Squadron, 56 IM-99A
:: Activated on 1 February 1959
:: Assigned to:
New York Air Defense Sector
:: Inactivated 15 December 1964
:: Stationed at:
Suffolk County Air Force Base Missile Annex, New York
::: Bomarc site located 3 miles SW at
:
22d Air Defense Missile Squadron: 28 IM-99A/28 IM-99B
:: Activated on 15 September 1959
:: Assigned to:
Washington Air Defense Sector
:: Reassigned to:
33d Air Division, 1 April 1966
:: Reassigned to:
20th Air Division, 19 November 1969
:: Inactivated: 31 October 1972
:: Stationed at:
Langley AFB, Virginia
::: Bomarc site located 3 miles WNW at
:
26th Air Defense Missile Squadron: 28 IM-99A/28 IM-99B
:: Activated 1 March 1959
:: Assigned to:
Boston Air Defense Sector
:: Reassigned to:
35th Air Division, 1 April 1966
:: Reassigned to:
21st Air Division, 19 November 1969
:: Inactivated: 30 April 1972
:: Stationed at:
Otis Air Force Base BOMARC site, Massachusetts
::: Bomarc site located 1 mile NNW at
:
30th Air Defense Missile Squadron: 28 IM-99A
:: Activated on 1 June 1959
:: Assigned to
Bangor Air Defense Sector
:: Inactivated: 15 December 1964
:: Stationed at
Dow AFB, Maine
::: Bomarc site located 4 mils NNE at
:
35th Air Defense Missile Squadron: 56 IM-99B
:: Activated 1 June 1960
:: Assigned to
Syracuse Air Defense Sector
:: Reassigned to:
Detroit Air Defense Sector, 4 September 1963
:: Reassigned to:
34th Air Division, 1 April 1966
:: Reassigned to:
35th Air Division, 15 September 1969
:: Inactivated: 31 December 1969
:: Stationed at:
Niagara Falls Air Force Missile Site, New York
::: Bomarc site located at
:
37th Air Defense Missile Squadron: 28 IM-99B
:: Activated 1 March 1960
:: Assigned to
30th Air Division
The 30th Air Division (30th AD) is an inactive United States Air Force organization. Its last assignment was with Air Defense Command, assigned to Tenth Air Force, being stationed at Sioux City Air National Guard Base, Sioux City Municipal Air ...
:: Reassigned to:
Sault Sainte Marie Air Defense Sector, 1 April 1960
:: Reassigned to:
Duluth Air Defense Sector, 1 October 1963
:: Reassigned to:
29th Air Division, 1 April 1966
:: Reassigned to:
23d Air Division, 19 November 1969
:: Inactivated 31 July 1972
:: Stationed at:
Kincheloe AFB, Michigan
::: Bomarc site located 19 miles NW at Raco
:
46th Air Defense Missile Squadron: 28 IM-99A/56 IM-99B
:: Activated 1 January 1959
:: Assigned to
New York Air Defense Sector
:: Reassigned to:
21st Air Division, 1 April 1966
:: Reassigned to:
35th Air Division, 1 December 1957
:: Reassigned to:
21st Air Division, 19 November 1969
:: Inactivated 31 October 1972
:: Stationed at:
McGuire AFB, New Jersey
::: Bomarc site located 4 miles ESE at
:
74th Air Defense Missile Squadron: 28 IM-99B
:: Activated 1 April 1960
:: Assigned to
Duluth Air Defense Sector
:: Reassigned to:
29th Air Division, 1 April 1966
:: Reassigned to:
23d Air Division, 19 November 1969
:: Inactivated 30 April 1972
:: Stationed at:
Duluth International Airport, Minnesota
::: Bomarc site located 10 miles NE at
:
4751st Air Defense Missile Squadron
:: Activated 15 January 1959
:: Assigned to
73d Air Division (Weapons)
:: Reassigned to:
32d Air Division, 1 October 1959
:: Reassigned to:
Montgomery Air Defense Sector, 1 July 1962
:: Reassigned to:
Air Defense, Tactical Air Command, 1 September 1979
:: Inactivated 30 September 1979
:: Stationed at:
Eglin Auxiliary Field #9 (Hurlburt Field), Florida
::: Bomarc site located on
Santa Rosa Island at
::: Bomarc site located at
Eglin Auxiliary Field #5 (Piccolo Field) at
*
Air Force Systems Command
The Air Force Systems Command (AFSC) is an inactive United States Air Force Major Command. It was established in April 1951, being split off from Air Materiel Command. The mission of AFSC was Research and Development for new weapons systems.
AFS ...
::
Cape Canaveral Air Force Station
Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
Headquartered at the nearby Patrick Space Force Base, the sta ...
, Florida
::: Launch Complex 4 (LC-4) was used for Bomarc testing and development launches 2 February 1956 – 15 April 1960 (17 Launches).
::
Vandenberg Air Force Base
Vandenberg may refer to:
* Vandenberg (surname), including a list of people with the name
* USNS ''General Hoyt S. Vandenberg'' (T-AGM-10), transport ship in the United States Navy, sank as an artificial reef in Key West, Florida
* Vandenberg S ...
, California
::: Two launch sites, BOM-1 and BOM-2 were used by the
United States Navy
The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
for Bomarc launches against aerial targets. The first launch taking place on 25 August 1966. The last two launches occurred on 14 July 1982. BOM1 49 launches; BOM2 38 launches.
Locations under construction but not activated. Each site was programmed for 28 IM-99B missiles:
*
Camp Adair,
Oregon
Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...
*
Charleston AFB,
South Carolina
South Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders North Carolina to the north and northeast, the Atlantic Ocean to the southeast, and Georgia (U.S. state), Georg ...
*
Ethan Allen AFB,
Vermont
Vermont () is a U.S. state, state in the New England region of the Northeastern United States. It borders Massachusetts to the south, New Hampshire to the east, New York (state), New York to the west, and the Provinces and territories of Ca ...
*
Paine Field
Seattle Paine Field International Airport — also known as Paine Field and Snohomish County Airport — is a commercial and general aviation airport serving the Seattle metropolitan area in the U.S. state of Washington. It is located in uni ...
,
Washington
*
Travis AFB
Travis Air Force Base is a United States Air Force base under the operational control of Air Mobility Command (AMC), located three miles (5 Kilometre, km) east of the central business district of the city of Fairfield, California, Fairfield, i ...
,
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
*
Truax Field,
Wisconsin
Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michig ...
*
Vandenberg AFB
Vandenberg Space Force Base , previously Vandenberg Air Force Base, is a United States Space Force Base in Santa Barbara County, California. Established in 1941, Vandenberg Space Force Base is a space launch base, launching spacecraft from the ...
,
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
Reference for BOMARC units and locations:
File:6th Air Defense Missile Squadron - ADC - Emblem.png, 6th ADMS
File:22d Air Defense Missile Squadron - ADC - Emblem.png, 22d ADMS
File:26th Air Defense Missile Squadron - ADC - Emblem.png, 26th ADMS
File:30th Air Defense Missile Squadron - ADC - Emblem.png, 30th ADMS
File:35th Air Defense Missile Squadron - ADC - Emblem.png, 35th ADMS
File:37th Air Defense Missile Squadron - ADC - Emblem.png, 37th ADMS
File:46th Air Defense Missile Squadron - ADC - Emblem.png, 46th ADMS
File:74th Air Defense Missile Squadron - ADC - Emblem.png, 74th ADMS
File:4751st_Air_Defense_Squadron_-_ADC_-_Emblem.png, 4751st ADMS
File:Rcaf 446 squadorn BOMARC.png, RCAF 446 Sqdn
File:Rcaf 447 squadorn BOMARC.png, RCAF 447 Squdn
Surviving missiles
Although a number of IM-99/CIM-10 Bomarcs have been placed on public display, because of concerns about the possible environmental hazards of the
thoriated magnesium structure of the airframe several have been removed from public view.
[Young, Gord]
"Cold War relic on the move."
' North Bay Nugget'', 12 September 2009. Retrieved: 24 December 2009.
Russ Sneddon, director of the
Air Force Armament Museum, Eglin Air Force Base, Florida provided information about missing CIM-10 exhibit airframe serial 59–2016, one of the museum's original artifacts from its founding in 1975 and donated by the 4751st Air Defense Squadron at
Hurlburt Field
Hurlburt Field is a United States Air Force installation located in Okaloosa County, Florida, immediately west of the town of Mary Esther. It is part of the greater Eglin Air Force Base reservation and is home to Headquarters Air Force S ...
, Eglin Auxiliary Field 9, Eglin AFB. As of December 2006, the suspect missile was stored in a secure compound behind the Armaments Museum. In December 2010, the airframe was still on premises, but partly dismantled.

Below is a list of museums or sites which have a Bomarc missile on display or in storage:
*
Air Force Armament Museum,
Eglin Air Force Base
Eglin Air Force Base is a United States Air Force (USAF) base in the western Florida panhandle, located about southwest of Valparaiso, Florida, Valparaiso in Okaloosa County, Florida, Okaloosa County.
The host unit at Eglin is the 96th Test ...
,
Florida
Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...
. In storage.
*
Air Force Space & Missile Museum
The Cape Canaveral Space Force Museum (formerly the Air Force Space and Missile Museum) is located at Cape Canaveral Launch Complex 26, Launch Complex 26 at Cape Canaveral Space Force Station, Florida. It includes artifacts from the early American ...
,
Cape Canaveral Air Force Station
Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
Headquartered at the nearby Patrick Space Force Base, the sta ...
,
Florida
Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...
. It is on display Hangar C.
*
Alberta Aviation Museum,
Edmonton
Edmonton is the capital city of the Provinces and territories of Canada, Canadian province of Alberta. It is situated on the North Saskatchewan River and is the centre of the Edmonton Metropolitan Region, which is surrounded by Central Alberta ...
,
Alberta
Alberta is a Provinces and territories of Canada, province in Canada. It is a part of Western Canada and is one of the three Canadian Prairies, prairie provinces. Alberta is bordered by British Columbia to its west, Saskatchewan to its east, t ...
, Canada
*
Canada Aviation and Space Museum
The Canada Aviation and Space Museum () (formerly the Canada Aviation Museum (''Musée de l'aviation du Canada'') and National Aeronautical Collection (''Collection aéronautique nationale'')) is Canada's national aviation history museum. The m ...
,
Ottawa
Ottawa is the capital city of Canada. It is located in the southern Ontario, southern portion of the province of Ontario, at the confluence of the Ottawa River and the Rideau River. Ottawa borders Gatineau, Gatineau, Quebec, and forms the cor ...
,
Ontario
Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...
, Canada
*
Hill Aerospace Museum,
Hill Air Force Base
Hill Air Force Base is a major U.S. Air Force (USAF) base located in Davis County, Utah, just south of the city of Ogden, and bordering the Cities of Layton, Clearfield, Riverdale, Roy, and Sunset with its largest border immediately adja ...
,
Utah
Utah is a landlocked state in the Mountain states, Mountain West subregion of the Western United States. It is one of the Four Corners states, sharing a border with Arizona, Colorado, and New Mexico. It also borders Wyoming to the northea ...
*
Historical Electronics Museum,
Linthicum, Maryland (display of AN/DPN-53, the first airborne pulse-doppler radar, used in the Bomarc)
* Illinois Soldiers & Sailors Home,
Quincy, Illinois
Quincy ( ) is a city in Adams County, Illinois, United States, and its county seat. Located on the Mississippi River, the population was 39,463 as of the 2020 United States census, 2020 census, down from 40,633 in 2010. The Quincy, Illinois, mic ...
*
Keesler Air Force Base,
Biloxi, Mississippi
Biloxi ( ; ) is a city in Harrison County, Mississippi, United States. It lies on the Gulf Coast of the United States, Gulf Coast in southern Mississippi, bordering the city of Gulfport, Mississippi, Gulfport to its west. The adjacent cities ar ...
*
Museum of Aviation,
Robins Air Force Base
Robins Air Force Base is a major United States Air Force installation located in Houston County, Georgia, Houston County, Georgia, United States. The base is located just east of the city of Warner Robins, Georgia, Warner Robins, south-southea ...
,
Warner Robins, Georgia
Warner Robins (WRB; typically ) is a city in Houston County, Georgia, Houston and Peach County, Georgia, Peach Counties in the U.S. state of Georgia (U.S. state), Georgia. It is the state's Georgia (U.S. state)#Major cities, 11th-largest incorpo ...
*
National Museum of Nuclear Science & History,
Kirtland Air Force Base,
Albuquerque, New Mexico
Albuquerque ( ; ), also known as ABQ, Burque, the Duke City, and in the past 'the Q', is the List of municipalities in New Mexico, most populous city in the U.S. state of New Mexico, and the county seat of Bernalillo County, New Mexico, Bernal ...
*
*
Octave Chanute Aerospace Museum (former
Chanute Air Force Base),
Rantoul, Illinois
Rantoul is a village in northern Champaign County, Illinois, United States. The population was 12,371 at the 2020 census. It is part of the Champaign–Urbana metropolitan area.
History
The community was named after Robert Rantoul, Jr., a ...
; the museum closed on 30 December 2015
*
Peterson Air and Space Museum,
Peterson Air Force Base,
Colorado
Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...
*
Strategic Air and Space Museum,
Ashland, Nebraska
Ashland is a city in Saunders County, Nebraska, United States. The population was 3,262 at th2022 census
History
Ashland is located at the site of a low-water limestone ledge along the bottom of Salt Creek, an otherwise mud-bottomed stream th ...
*
USAF Airman Heritage Museum,
Lackland Air Force Base
Lackland Air Force Base is a United States Air Force (USAF) base located in Bexar County, Texas, United States. The base is under the jurisdiction of the 802d Mission Support Group, Air Education and Training Command (AETC) and an enclave of ...
,
San Antonio, Texas
San Antonio ( ; Spanish for "Anthony of Padua, Saint Anthony") is a city in the U.S. state of Texas and the most populous city in Greater San Antonio. San Antonio is the List of Texas metropolitan areas, third-largest metropolitan area in Texa ...
*
Vandenberg Air Force Base
Vandenberg may refer to:
* Vandenberg (surname), including a list of people with the name
* USNS ''General Hoyt S. Vandenberg'' (T-AGM-10), transport ship in the United States Navy, sank as an artificial reef in Key West, Florida
* Vandenberg S ...
(
Space and Missile Heritage Center), California. Bomarc not for public access.
Impact on popular music
The Bomarc missile captured the imagination of the American and Canadian popular music industry, giving rise to a pop music group, the Bomarcs (composed mainly of servicemen stationed on a Florida radar site that tracked Bomarcs), a record label, Bomarc Records,
[Bomarc Records]
, ''Rate Your Music'' and a moderately successful Canadian pop group,
The Beau Marks
The Beau-Marks were a Canadian rock music group formed in 1958 in Montreal, Quebec. Their first release, the April 1959 single "Rockin' Blues" b/w "Moonlight Party", came out under the name The Del-Tones, but the group changed their name soon after ...
.
See also
References
Bibliography
* Clearwater, John. ''Canadian Nuclear Weapons: The Untold Story of Canada's Cold War Arsenal''. Toronto, Ontario, Canada: Dundern Press, 1999. .
* Clearwater, John. ''U.S. Nuclear Weapons in Canada''. Toronto, Ontario, Canada: Dundern Press, 1999. .
* Cornett, Lloyd H. Jr. and Mildred W. Johnson. ''A Handbook of Aerospace Defense Organization 1946–1980''. Peterson Air Force Base, Colorado: Office of History, Aerospace Defense Center, 1980. No ISBN.
* Gibson, James N. ''Nuclear Weapons of the United States: An Illustrated History''. Atglen, Pennsylvania: Schiffer Publishing Ltd., 1996. .
* Jenkins, Dennis R. and Tony R. Landis. ''Experimental & Prototype U.S. Air Force Jet Fighters''. North Branch, Minnesota: Specialty Press, 2008. .
* Nicks, Don, John Bradley and Chris Charland. ''A History of the Air Defence of Canada 1948–1997''. Ottawa, Ontario, Canada: Commander Fighter Group, 1997. .
* ''Pedigree of Champions: Boeing Since 1916, Third Edition''. Seattle, Washington: The Boeing Company, 1969.
* Winkler, David F. ''Searching the Skies: The Legacy of the United States Cold War Defense Radar Program''. Langley Air Force Base, Virginia: United States Air Force Headquarters Air Combat Command, 1997. .
*
*
External links
RCAF 446 SAM SquadronBomarc Video Clip– Oral history: Les Earnest talks about air defense system called SAGE and a ground-to-air missile called BOMARC.
{{DEFAULTSORT:Cim-10 Bomarc
Cold War surface-to-air missiles of the United States
Nuclear anti-aircraft weapons
Ramjet-powered missiles
Nuclear weapons of Canada
Nuclear weapons of the United States
Military equipment introduced in the 1950s