|
Freeflight International Airport
Dyess Army Airfield (, also known as Freeflight International Airport) is a military airfield on Roi-Namur, Kwajalein Atoll, Marshall Islands. It is owned by the United States Army. Approximately 60 U.S. personnel reside on the base, with an additional 100 personnel commuting from Bucholz Army Airfield daily by plane. History When the Japanese took control of the island during World War II they built an airfield that took the form of the number "4." After the 4th Marine Division landed the Seabees of 3rd Battalion, 20th Marines and the 109th Naval Construction Battalion made the field operational again. The Japanese designated the runways A, B, and C, with A being the vertical leg, B being the diagonal and C intersecting at a right angle to A. The Seabees of the Naval Base Kwajalein repaired runways A and C. Today the only runway that remains is A. Facilities Dyess Army Airfield is at an elevation of 10 feet (3 m) above mean sea level. The runway is designated 04/22 wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ronald Reagan Ballistic Missile Defense Test Site
The Ronald Reagan Ballistic Missile Defense Test Site, commonly referred to as the Reagan Test Site (formerly Kwajalein Missile Range), is a missile test range in Marshall Islands (Pacific Ocean). It covers about and includes rocket launch sites at the Kwajalein Atoll (on multiple islands), Wake Island, and Aur Atoll. It primarily functions as a test facility for U.S. missile defense and space research programs. The Reagan Test Site is under the command of the US Army Kwajalein Atoll, or USAKA (pronounced ). Purpose and facilities The facility is part of the Defense Major Range and Test Facility Base. They provide range instrumentation, missile launch facilities, mission control center, range safety, meteorological support, and support space operations. , the facility's budget was US$182 million. The site hosts a suite of unique instrumentation, located on eight islands throughout the Kwajalein Atoll. This instrumentation includes a comprehensive suite of precision metric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4th Marine Division
The 4th Marine Division is a reserve division in the United States Marine Corps. It was raised in 1943 for service during World War II, and subsequently fought in the Pacific against the Japanese. Deactivated after the war, the division was re-formed in 1966 and elements of the division deployed during the Gulf War in 1990–1991, as well as during the Iraq War. It is currently the ground combat element of the Marine Forces Reserve and is headquartered in New Orleans, Louisiana and has units throughout the United States. Mission The division is tasked with providing trained combat and combat support personnel and units to augment and reinforce the active component in time of war, national emergency, and at other times as national security requires; and have the capability to reconstitute the division, if required. Subordinate units * Headquarters Battalion * 14th Marine Regiment * 23rd Marine Regiment * 25th Marine Regiment * 4th Assault Amphibian Battalion * 4th Comba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asphalt
Asphalt, also known as bitumen (, ), is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term asphaltum was also used. Full text at Internet Archive (archive.org) The word is derived from the Ancient Greek ἄσφαλτος ''ásphaltos''. The largest natural deposit of asphalt in the world, estimated to contain 10 million tons, is the Pitch Lake located in La Brea in southwest Trinidad ( Antilles island located on the northeastern coast of Venezuela), within the Siparia Regional Corporation. The primary use (70%) of asphalt is in road construction, where it is used as the glue or binder mixed with aggregate particles to create asphalt concrete. Its other main uses are for bituminous waterproofing products, including production of roofing felt and for sealing flat roofs. In material sciences and engineering, the terms "as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Runway
According to the International Civil Aviation Organization (ICAO), a runway is a "defined rectangular area on a land aerodrome prepared for the landing and takeoff of aircraft". Runways may be a man-made surface (often asphalt concrete, asphalt, concrete, or a mixture of both) or a natural surface (sod, grass, soil, dirt, gravel, ice, sand or road salt, salt). Runways, as well as taxiways and Airport apron, ramps, are sometimes referred to as "tarmac", though very few runways are built using Tarmacadam, tarmac. Takeoff and landing areas defined on the surface of water for seaplanes are generally referred to as waterways. Runway lengths are now International Civil Aviation Organization#Use of the International System of Units, commonly given in meters worldwide, except in North America where feet are commonly used. History In 1916, in a World War I war effort context, the first concrete-paved runway was built in Clermont-Ferrand in France, allowing local company Michelin to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mean Sea Level
There are several kinds of mean in mathematics, especially in statistics. Each mean serves to summarize a given group of data, often to better understand the overall value ( magnitude and sign) of a given data set. For a data set, the '' arithmetic mean'', also known as "arithmetic average", is a measure of central tendency of a finite set of numbers: specifically, the sum of the values divided by the number of values. The arithmetic mean of a set of numbers ''x''1, ''x''2, ..., x''n'' is typically denoted using an overhead bar, \bar. If the data set were based on a series of observations obtained by sampling from a statistical population, the arithmetic mean is the '' sample mean'' (\bar) to distinguish it from the mean, or expected value, of the underlying distribution, the '' population mean'' (denoted \mu or \mu_x).Underhill, L.G.; Bradfield d. (1998) ''Introstat'', Juta and Company Ltd.p. 181/ref> Outside probability and statistics, a wide range of other notions of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elevation
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Vertical datum). The term ''elevation'' is mainly used when referring to points on the Earth's surface, while '' altitude'' or '' geopotential height'' is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit, and '' depth'' is used for points below the surface. Elevation is not to be confused with the distance from the center of the Earth. Due to the equatorial bulge, the summits of Mount Everest and Chimborazo have, respectively, the largest elevation and the largest geocentric distance. Aviation In aviation the term elevation or aerodrome elevation is defined by the ICAO as the highest point of the landing area. It is often measured in feet and can be found in approach charts of the aerodrome ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Base Kwajalein
Naval Base Kwajalein was United States Navy base built on Kwajalein Atoll, in the Marshall Islands to support the World War II efforts in the Pacific War. The base was built after the Battle of Kwajalein ended 3 February 1944. The US Navy built airfields, a seaport and a craft repair depot on the captured islands. The base was part of the vast Naval Base Marshall Islands. History The US Armed Forces planned and carried out Operation Flintlock on 31 January 1944 in the amphibious landings on Kwajalein. The United States Marine Corps took Kwajalein by 4 February 1944. On 4 February 1944 the US Navy's Seabees built Kwajalein into a major base and staging area for future operations. On Kwajalein the Seabee built an airfield, the Kwajalein Airfield. The US Navy and United States Army Air Forces operated out of the airfield. US Navy supported the Marines unit VMB-613 (Marine Bombing Squadron) that operated PBJ, the US Navy's version of the North American B-25 Mitchell. Unit VM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
20th Marines
20th Marine Regiment was a Composite Engineer Regiment of the United States Marine Corps that fought during World War II.U.S. Marine Corps World War II Order of Battle Fleet Marine Force Ground Units, Rottman p. 220''/ref> Subordinate units The regiment was a composite of three different types of battalions and a headquarters and service company: * Headquarters & Services Company * 1st Battalion, A, B,& C Companies 4th Engineer Battalion * 2nd Battalion, D, E, & F Companies 4th Pioneer Battalion * 3rd Battalion, G, H, & I Companies 121st Naval Construction BattalionUS Marine Corps World War II order of battle : ground and air units in the Pacific War, 1939-1945, date=2002, Gordon L. Rottmann, Greenwood Press, Westport, Connecticut, p. 218-22/ref> History 20th Marines was formed on June 15, 1943, at Marine Corps Base Camp Lejeune, North Carolina, it originally consisted of three battalions and was assigned to support the 4th Marine Division. The 1st and 2nd Battalions were m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seabees
, colors = , mascot = Bumblebee , battles = Guadalcanal, Bougainville, Cape Gloucester, Los Negros, Guam, Peleliu, Tarawa, Kwajalein, Saipan, Tinian, Iwo Jima, Philippines, Okinawa, North Africa, Sicily, Anzio, Normandy, Inchon landing, Khe Sanh, Dong Xaoi, Chu Lai, Con Thien, Desert Storm, Operation Iraqi Freedom, and Enduring Freedom , anniversaries = 12/28/1941 formation requested3/5/1942 formation authorized , website = https://www.necc.usff.navy.mil/seabees/ , notable_commanders = Admiral Ben Moreell United States Naval Construction Battalions, better known as the Navy Seabees, form the U.S. Naval Construction Force (NCF). The Seabee nickname is a heterograph of the initial letters "CB" from the words "Construction Battalion". Depending upon context, "Seabee" can refer to all enlisted personnel in the USN's occupational field 7 (OF-7), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies of World War II, Allies and the Axis powers. World War II was a total war that directly involved more than 100 million Military personnel, personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Air warfare of World War II, Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the Atomic bombings of Hiroshima and Nagasaki, only two nuclear weapons ever used in war. World War II was by far the List of wars by death toll, deadliest conflict in hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roi-Namur
Roi-Namur ( ) is an island in the north part of the Kwajalein Atoll in the Marshall Islands. Today it is a major part of the Ronald Reagan Ballistic Missile Defense Test Site, hosting several radar systems used for tracking and characterizing missile reentry vehicles (RV) and their penetration aids (penaids). Etymology The name of the new island is after the formerly separate islands Roi and Namur were joined by landfill. ''Roi'' is originally from Marshallese ''Ruot'', while ''Namur'' is originally from Marshallese ''Nim̧ur''. History Germany annexed the Marshalls in 1885 but did not put government officials on the islands until 1906, leaving island affairs to a group of powerful German trading companies. Under the Treaty of Versailles, Japan took over after World War I. They colonised the Marshalls extensively, developing and fortifying large bases on many of the islands. Roi-Namur was the target of the U.S. 4th Marine Division in the Battle of Kwajalein, in February 1944. D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Japanese Army
The was the official ground-based armed force of the Empire of Japan from 1868 to 1945. It was controlled by the Imperial Japanese Army General Staff Office and the Ministry of the Army, both of which were nominally subordinate to the Emperor of Japan as supreme commander of the army and the Imperial Japanese Navy. Later an Inspectorate General of Aviation became the third agency with oversight of the army. During wartime or national emergencies, the nominal command functions of the emperor would be centralized in an Imperial General Headquarters (IGHQ), an ad hoc body consisting of the chief and vice chief of the Army General Staff, the Minister of the Army, the chief and vice chief of the Naval General Staff, the Inspector General of Aviation, and the Inspector General of Military Training. History Origins (1868–1871) In the mid-19th century, Japan had no unified national army and the country was made up of feudal domains (''han'') with the Tokugawa shogunate (''bakuf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Imperial Japanese Army")