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Marine Air Control Squadron 3
Marine Air Control Squadron 3 (MACS-3) was a former United States Marine Corps aviation command and control squadron. During its later years it also served as an operational test and evaluation squadron. Originally formed in World War II as Air Warning Squadron 12 (AWS-12), its original mission was to provide aerial surveillance and ground-controlled interception (GCI) for Marine Corps forces during amphibious operations. The squadron did not participate in combat operations during WWII however it did deploy and operate during the Korean War. In 1961, MACS-3 was transferred from the Fleet Marine Force to the administrative control of Air, Fleet Marine Forces Pacific in order to serve as the operational test and evaluation squadron for what was at the time, the largest research and development project in the Marine Corps - Marine Tactical Data System (MTDS). After MTDS testing was complete the Marine Corps recognized that it was not properly staffed to develop, test, and ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Surveillance
A surveillance aircraft is an aircraft used for surveillance. They are operated by military forces and other government agencies in roles such as intelligence gathering, battlefield surveillance, airspace surveillance, reconnaissance, observation (e.g. artillery spotting), border patrol and fishery protection. This article concentrates on aircraft used in those roles, rather than for traffic monitoring, law enforcement and similar activities. Surveillance aircraft usually carry no armament, or only limited defensive armament. They do not always require high-performance capability or stealth characteristics, and may be modified civilian aircraft. Surveillance aircraft have also included moored balloons (e.g. TARS) and unmanned aerial vehicles (UAVs). Definitions The terms “surveillance” and “reconnaissance” have sometimes been used interchangeably, but, in the military context, a distinction can be drawn between surveillance, which monitors a changing situation i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SCR-270
The SCR-270 (Set Complete Radio model 270) was one of the first operational early-warning radars. It was the U.S. Army's primary long-distance radar throughout World War II and was deployed around the world. It is also known as the Pearl Harbor Radar, since it was an SCR-270 set that detected the incoming raid about 45 minutes before the December 7, 1941, attack on Pearl Harbor commenced. Two versions were produced, the mobile SCR-270, and the fixed SCR-271 which used the same electronics but used an antenna with somewhat greater resolution. An upgraded version, the SCR-289, was also produced, but saw little use. The -270 versions were eventually replaced by newer microwave units based on cavity magnetron that was introduced to the US during the Tizard Mission. The only early warning system of the sort to see action in World War II was the AN/CPS-1, which was available in mid-1944, in time for D-day. Building of the radar The Signal Corps had been experimenting with some rad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kwajalein Atoll
Kwajalein Atoll (; Marshallese: ) is part of the Republic of the Marshall Islands (RMI). The southernmost and largest island in the atoll is named Kwajalein Island, which its majority English-speaking residents (about 1,000 mostly U.S. civilian personnel) often use the shortened name, Kwaj . The total land area of the atoll amounts to just over . It lies in the Ralik Chain, southwest of Honolulu, Hawaii. The US Navy has hosted a naval base on Kwajalein Island since World War II. It was the final resting place of the German cruiser '' Prinz Eugen'' after it survived the Operation Crossroads nuclear test in 1946. In the late 1950s, the US Army took over the base as part of their Nike Zeus anti-ballistic missile efforts, and since then the atoll has been widely used for missile tests of all sorts. Today it is part of the Ronald Reagan Ballistic Missile Defense Test Site, with various radars, tracking cameras, missile launchers, and many support systems spread across many islands. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temporary Duty Assignment
Temporary duty travel (TDY), also known as temporary additional duty (TAD), is a designation reflecting a United States Armed Forces service member's—or civilian Department of Defense employee's—travel or other assignment at a location other than the traveler's permanent duty station as authorized by thJoint Travel Regulations This type of secondment is usually of relatively short duration, typically from two to 189 days in length. Not all agencies use this designation. Temporary duty assignments usually come with per diem pay, covering lodging, meals, and incidental expenses. Many employees value the per diem aspect of a TDY, since that money is guaranteed, even if they spend less than their allotted daily value. However, most agencies handle the lodging per diem separately from the meals and incidentals, and employees may not make money by staying at cheaper accommodations, or putting more than one person in a room. Typically, an employee may request a cash advance of 60– ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawaii
Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only state geographically located within the tropics. Hawaii comprises nearly the entire Hawaiian archipelago, 137 volcanic islands spanning that are physiographically and ethnologically part of the Polynesian subregion of Oceania. The state's ocean coastline is consequently the fourth-longest in the U.S., at about . The eight main islands, from northwest to southeast, are Niihau, Kauai, Oahu, Molokai, Lānai, Kahoolawe, Maui, and Hawaii—the last of these, after which the state is named, is often called the "Big Island" or "Hawaii Island" to avoid confusion with the state or archipelago. The uninhabited Northwestern Hawaiian Islands make up most of the Papahānaumokuākea Marine National Monument, the United States' largest protected ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Corps Air Station Ewa
Marine Corps Air Station Ewa (MCAS Ewa) was a United States Marine Corps air station that was located west of Pearl Harbor on the island of Oahu, Hawaii. The base was hit during the attack on Pearl Harbor, and later served as the hub for all Marine aviation units heading into combat in the Pacific Theater during World War II. The base was closed in 1952 because its runways were too short for jet aircraft, and expansion was impossible due to the proximity of Naval Air Station Barbers Point. Ewa has been abandoned since 1952; however, two of its runways are still visible from the air and many of the revetments still remain in good condition. History It was founded as an airship base for the United States Navy in 1925, but no airships ever landed there. The USS Shenandoah crashed in Ohio in 1925, the USS Akron was destroyed in 1933 and the USS Macon in 1935, leading to the cancellation of the airship program. The base's upgrade to an air station began in September 1940, and on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air-sea Rescue
Air-sea rescue (ASR or A/SR, also known as sea-air rescue), and aeronautical and maritime search and rescue (AMSAR) by the ICAO and International Maritime Organization, IMO, is the coordinated search and rescue (SAR) of the survivors of emergency water landings as well as people who have survived the loss of their seagoing vessel. ASR can involve a wide variety of resources including seaplanes, helicopters, submarines, rescue boats and ships. Specialized equipment and techniques have been developed. Both military and civilian units can perform air-sea rescue. Its principles are laid out in the International Aeronautical and Maritime Search and Rescue Manual. The International Convention on Maritime Search and Rescue is the legal framework that applies to international air-sea rescue. Air-sea rescue operations carried out during times of conflict have been credited with saving valuable trained and experienced airmen. Moreover, the knowledge that such operations are being carried o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground-controlled Interception
Ground-controlled interception (GCI) is an air defence tactic whereby one or more radar stations or other observational stations are linked to a command communications centre which guides interceptor aircraft to an airborne target. This tactic was pioneered during World War I by the London Air Defence Area organization, which became the Royal Air Force's Dowding system in World War II, the first national-scale system. The ''Luftwaffe'' introduced similar systems during the war, but most other combatants did not suffer the same threat of air attack and did not develop complex systems like these until the Cold War era. Today the term GCI refers to the style of battle direction, but during WWII it also referred to the radars themselves. Specifically, the term was used to describe a new generation of radars that spun on their vertical axis in order to provide a complete 360 degree view of the sky around the station. Previous systems, notably Chain Home (CH), could only be directed along ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early-warning Radar
An early-warning radar is any radar system used primarily for the long-range detection of its targets, i.e., allowing defences to be alerted as ''early'' as possible before the intruder reaches its target, giving the air defences the maximum time in which to operate. This contrasts with systems used primarily for tracking or gun laying, which tend to offer shorter ranges but offer much higher accuracy. EW radars tend to share a number of design features that improve their performance in the role. For instance, EW radar typically operates at lower frequencies, and thus longer wavelengths, than other types. This greatly reduces their interaction with rain and snow in the air, and therefore improves their performance in the long-range role where their coverage area will often include precipitation. This also has the side-effect of lowering their optical resolution, but this is not important in this role. Likewise, EW radars often use much lower pulse repetition frequency to maximi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Point Conception
Point Conception (Chumash: ''Humqaq'') is a headland along the Gaviota Coast in southwestern Santa Barbara County, California. It is the point where the Santa Barbara Channel meets the Pacific Ocean, and as the corner between the mostly north-south trending portion of coast to the north and the east-west trending part of the coast near Santa Barbara, it makes a natural division between Southern and Central California, and is commonly used as such in regional weather forecasts. The Point Conception Lighthouse is at its tip. Toponymy Point Conception was named ''Cabo de Galera'' by Spanish maritime explorer Juan Rodriguez Cabrillo in 1542. In 1602, Sebastian Vizcaíno sailed past again, renaming the protruding headland ''Punta de la Limpia Concepción'' ("Point of the Immaculate Conception"). Vizcaíno's name stuck, and was later anglicized to today's version. Chumash beliefs The Chumash people of the region have traditionally known Point Conception as the "Western Gate", thro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Point Dume
Point Dume is a promontory on the coast of Malibu, California that juts out into the Pacific Ocean. The point, a long bluff, forms the northern end of the Santa Monica Bay. Point Dume Natural Area affords a vista of the Palos Verdes Peninsula and Santa Catalina Island. Zuma Beach lies to its immediate northwest. History Point Dume was named by George Vancouver in 1793 in honor of Padre Francisco Dumetz of Mission San Buenaventura. The name was misspelled on Vancouver's map as "Dume" and was never corrected. On a plat map of the Rancho Topanga Malibu Sequit finally confirmed to new owner Matthew Keller in August 1870, the point is marked on the map as "Point Zuma or Duma". In the early 1980s, real estate development interests began pronouncing the name "du-MAY" and spelling it "Dumé"; this did not catch on. In the mid-1930s, the 900-ton steam-schooner ''California'', of the California Whaling Company, would anchor in Paradise Cove about a mile offshore, near Point Dume, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Corps Air Station Santa Barbara
Marine Corps Air Station Santa Barbara (MCAS Santa Barbara) was a United States Marine Corps air station that was located in Goleta, California north of Los Angeles during World War II. It was also known as the Goleta Air Station in the 1940s. Commissioned on December 4, 1942, the air station consisted of an airfield that had been built into the Goleta Slough and served as a training base for numerous squadrons before they deployed to support combat operations in the Pacific Theater. Later in the war, the station would serve as home to Marine squadrons that were trained to operate from aircraft carriers providing close air support for their fellow Marines on the ground. Following the surrender of Japan and the subsequent drawdown of forces that ensued, the air station closed its doors in 1946 and today its property is home to the Santa Barbara Municipal Airport and the campus of the University of California, Santa Barbara. History Early years In the early 1930s, an airfield ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
