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John Leonard Orr
John Leonard Orr (born ) is an American convicted serial arsonist, mass murderer and former firefighter. A fire captain and arson investigator in Glendale, California, Orr was convicted of serial arson and four counts of murder; he is believed to have set nearly 2,000 fires in a 30 year arson spree, most of them between 1984 and 1991, making him the most prolific serial arsonist in American history. During his arson spree, Orr had several nicknames: the Pillow Pyro due to the location of the fires inside shops; the Frito Bandito, due to starting some of his fires using potato chips; and the Coin Tosser for incorporating coins into his incendiary devices. Orr's ''modus operandi'' was to set fires using a timed device, usually comprising a lit cigarette with three matches wrapped in ruled yellow writing paper and secured by a rubber band, in stores while they were open and populated. He would also set small fires in the grassy hills in order to distract firefighters, leaving fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arson
Arson is the act of willfully and deliberately setting fire to or charring property. Although the act of arson typically involves buildings, the term can also refer to the intentional burning of other things, such as motor vehicles, watercraft, or forests. The crime is typically classified as a felony, with instances involving risk to human life or property carrying a stricter penalty. Arson that results in death can be further prosecuted as manslaughter or murder. A common motive for arson is to commit insurance fraud. In such cases, a person destroys their own property by burning it and then lies about the cause in order to collect against their insurance policy. Arson is also often committed to conceal another crime, such as murder or burglary. A person who commits arson is referred to as an arsonist, or a serial arsonist if the person has committed arson several times. Arsonists normally use an accelerant (such as gasoline or kerosene) to ignite, propel, and direct fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modus Operandi
A (often shortened to M.O. or MO) is an individual's habits of working, particularly in the context of business or criminal investigations, but also generally. It is a Latin phrase, approximately translated as . Term The term is often used in police work when discussing crime and addressing the methods employed by criminals. It is also used in criminal profiling, where it can help in finding clues to the offender's psychology. It largely consists of examining the actions used by the individuals to execute the crime, prevent its detection and facilitate escape.Douglas, J. E. and A. W. Burgess, A. G. Burgess, R. K. Ressler. ''Crime classification manual'' (John Wiley & Sons, 2006) , p. 19-21. A suspect's ''modus operandi'' can assist in their identification, apprehension, or repression, and can also be used to determine links between crimes. In business, ''modus operandi'' is used to describe a firm's preferred means of executing business and interacting with other firms. Pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glendale House Destroyed By Arson 1990
Glendale is the anglicised version of the Gaelic Gleann Dail, which means ''valley of fertile, low-lying arable land''. It may refer to: Places Australia *Glendale, New South Wales **Stockland Glendale, a shopping centre * Glendale, Queensland, a locality in the Shire of Livingstone Canada * Glendale, Calgary, Alberta, a neighbourhood * Glendale, Nova Scotia * Glendale Secondary School, a highschool in Hamilton, Ontario New Zealand *Glendale, New Zealand, a suburb of Wainuiomata, Lower Hutt United Kingdom *Glendale, Northumberland, England, a valley *Glendale, Skye, Scotland *Glendale, a neighbourhood of Robroyston, Glasgow, Scotland United States *Glendale, Arizona, largest city with this name *Glendale, California, a city in Los Angeles County **Glendale University College of Law in Glendale, California ** Glendale Boulevard ** Glendale Freeway *Glendale, Humboldt County, California *Glendale, Colorado, in Arapahoe County *Glendale, Boulder County, Colorado *Glendale, Idaho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flashover
A flashover is the near-simultaneous ignition of most of the directly exposed combustible material in an enclosed area. When certain organic materials are heated, they undergo thermal decomposition and release flammable gases. Flashover occurs when the majority of the exposed surfaces in a space are heated to their autoignition temperature and emit flammable gases (see also flash point). Flashover normally occurs at or for ordinary combustibles and an incident heat flux at floor level of . An example of flashover is the ignition of a piece of furniture in a domestic room. The fire involving the initial piece of furniture can produce a layer of hot smoke, which spreads across the ceiling in the room. The hot buoyant smoke layer grows in depth, as it is bounded by the walls of the room. The thermal radiation, radiated heat from this layer heats the surfaces of the directly exposed combustible materials in the room, causing them to give off flammable gases, via pyrolysis. When the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyurethane
Polyurethane (; often abbreviated PUR and PU) is a class of polymers composed of organic chemistry, organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethane term does not refer to the single type of polymer but a group of polymers. Unlike polyethylene and polystyrene, polyurethanes can be produced from a wide range of starting materials resulting in various polymers within the same group. This chemical variety produces polyurethanes with different chemical structures leading to many List of polyurethane applications, different applications. These include rigid and flexible foams, and coatings, adhesives, Potting (electronics), electrical potting compounds, and fibers such as spandex and polyurethane laminate (PUL). Foams are the largest application accounting for 67% of all polyurethane produced in 2016. A polyurethane is typically produced by reacting a polymeric isocyanate with a polyol. Since a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hardware Store
Hardware stores (in a number of countries, "shops"), sometimes known as DIY stores, sell household hardware for home improvement including: fasteners, building materials, hand tools, power tools, keys, locks, hinges, chains, plumbing supplies, electrical supplies, cleaning products, housewares, tools, utensils, paint, and lawn and garden products directly to consumers for use at home or for business. Many hardware stores have specialty departments unique to its region or its owner's interests. These departments include hunting and fishing supplies, plants and nursery products, marine and boating supplies, pet food and supplies, farm and ranch supplies including animal feed, swimming pool chemicals, homebrewing supplies and canning supplies. Australia and New Zealand In Australia hardware stores specialise in home décor and include large selections of paint. There are three major hardware companies in Australia: Bunnings, Mitre 10 and Home Hardware. Home Hardwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Pasadena, California
South Pasadena is a city in Los Angeles County, California, United States. As of the 2020 census, it had a population of 26,943, up from 25,619 at the 2020 census. It is located in the Western San Gabriel Valley. It is in area and lies between the city of Pasadena, California, Pasadena, of which it was once a part, and the metropolis of Los Angeles. South Pasadena is the oldest self-builder of floats in the historic Tournament of Roses Parade. History The original inhabitants of the area were members of the Native American Hahamog-na tribe, a branch of the Tongva people, Tongva Nation (part of the Shoshone language group) that occupied the Los Angeles Basin. Akuvranga was the Tongva name for the area that covers modern-day South Pasadena and part of Pasadena. Tongva dwellings lined the Arroyo Seco (Los Angeles County) in South Pasadena and south to where it joins the Los Angeles River and along other natural waterways in the city. They lived in thatched, dome-shape lodges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles County
Los Angeles County, officially the County of Los Angeles and sometimes abbreviated as LA County, is the most populous county in the United States, with 9,663,345 residents estimated in 2023. Its population is greater than that of 40 individual U.S. states. Comprising 88 incorporated cities and 101+ unincorporated areas within a total area of , it is home to more than a quarter of Californians and is one of the most ethnically diverse U.S. counties. The county's seat, Los Angeles, is the second most populous city in the United States, with 3,820,914 residents estimated in 2023. The county is the domicile of the U.S. motion picture industry since the latter's inception in the early 20th century. History Los Angeles County is one of the original counties of California, created at the time of statehood in 1850. The county originally included parts of what are now Kern, San Bernardino, Riverside, Inyo, Tulare, Ventura, and Orange counties. In 1851 and 1852, Los ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire Science
Fire is the rapid oxidation of a fuel in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. Flames, the most visible portion of the fire, are produced in the combustion reaction when the fuel reaches its ignition point temperature. Flames from hydrocarbon fuels consist primarily of carbon dioxide, water vapor, oxygen, and nitrogen. If hot enough, the gases may become ionized to produce plasma. The color and intensity of the flame depend on the type of fuel and composition of the surrounding gases. Fire, in its most common form, has the potential to result in conflagration, which can lead to permanent physical damage. It directly impacts land-based ecological systems worldwide. The positive effects of fire include stimulating plant growth and maintaining ecological balance. Its negative effects include hazards to life and property, atmospheric pollution, and water contamination. When fire removes protective vegetation, heavy r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles Fire Department
The Los Angeles Fire Department (LAFD or LA City Fire) provides firefighting services and technical rescue services, hazardous materials services, and emergency medical services to the residents of the city of Los Angeles, California, United States. The LAFD is responsible for approximately four million people who live in the agency's jurisdiction. The Los Angeles Fire Department was founded in 1886 and is the third-largest municipal fire department in the United States, after the New York City Fire Department and the Chicago Fire Department. The department is sometimes also referred to as the "Los Angeles City Fire Department" or "LA City Fire" to distinguish it from the Los Angeles County Fire Department, which serves unincorporated areas and, via contracts, other incorporated municipalities within Los Angeles County, California, Los Angeles County without their own fire departments. The department is currently under the command of acting Fire Chief Ronnie Villanueva after f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles Police Department
The City of Los Angeles Police Department, commonly referred to as Los Angeles Police Department (LAPD), is the primary law enforcement agency of Los Angeles, California, United States. With 8,832 officers and 3,000 civilian staff, it is the third-largest municipal police department in the United States, after the New York City Police Department and the Chicago Police Department. The LAPD is headquartered at 100 West 1st Street, Los Angeles, 1st Street in the Civic Center, Los Angeles, Civic Center district. The Los Angeles Police Department resources, department's organization and resources are complex, including 21 community stations (divisions) grouped in four bureaus under the Office of Operations; multiple divisions within the Detective Bureau under the Office of Special Operations; and specialized units such as the LAPD Metropolitan Division, Metropolitan Division, LAPD Air Support Division, Air Support Division, and Major Crimes Division under the Counterterrorism & Speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 origins to 1 August 1907, as a part of the United States Army Signal Corps, the USAF was established by transfer of personnel from the Army Air Forces with the enactment of the National Security Act of 1947. It is the second youngest branch of the United States Armed Forces and the fourth in United States order of precedence, order of precedence. The United States Air Force articulates its core missions as air supremacy, intelligence, surveillance, target acquisition, and reconnaissance, global integrated intelligence, surveillance and reconnaissance, airlift, rapid global mobility, Strategic bombing, global strike, and command and control. The United States Department of the Air Force, Department of the Air Force, which serves as the USAF's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
