A clear-channel station is an AM radio station in North America that has the highest protection from interference from other stations, particularly concerning night-time skywave propagation. The system exists to ensure the viability of cross-country or cross-continent radio service, and is enforced through a series of treaties and statutory laws. Now known as Class A stations since 1982, they are occasionally still referred to by their former classifications of Class I-A, Class I-B, or Class I-N. The term "clear-channel" is used most often in the context of North America and the Caribbean, where the concept originated.
The 1st Special Forces Operational Detachment-Delta, commonly referred to as Delta Force, Combat Applications Group (CAG), "The Unit", Army Compartmented Element (ACE), or within JSOC as Task Force Green, is an elite special mission unit of the United States Army, under operational control of the Joint Special Operations Command. The unit is tasked with specialized missions primarily involving hostage rescue and counter-terrorism, as well as direct action and special reconnaissance against high-value targets. Delta Force and its maritime counterpart, the U.S. Navy's SEAL Team Six are the U.S. military's primary counterterrorism units. Delta Force and DEVGRU perform the most complex, classified, and dangerous missions in the U.S. military, as directed by the U.S. National Command Authority.
Rational ClearCase is a family of computer software tools that supports software configuration management (SCM) of source code and other software development assets. It also supports design-data management of electronic design artifacts, thus enabling hardware and software co-development. ClearCase includes revision control and forms the basis for configuration management at large and medium-sized businesses, accommodating projects with hundreds or thousands of developers. It is developed by IBM.
The 21st Army Group was a World War II British headquarters formation, in command of two field armies and other supporting units, consisting primarily of the British Second Army and the First Canadian Army. Established in London during July 1943, under the command of Supreme Headquarters Allied Expeditionary Force (SHAEF), it was assigned to Operation Overlord, the Western Allied invasion of Europe, and was an important Allied force in the European Theatre. The 21st Army Group operated in Northern France, Luxembourg, Belgium, the Netherlands and Germany from June 1944 until the end of the war in Europe in May 1945, after which it was redesignated the British Army of the Rhine (BAOR).
In computer science, a mask or bitmask is data that is used for bitwise operations, particularly in a bit field. Using a mask, multiple bits in a byte, nibble, word etc. can be set either on, off or inverted from on to off in a single bitwise operation.
Operation Varsity was a successful airborne forces operation launched by Allied troops that took place toward the end of World War II. Involving more than 16,000 paratroopers and several thousand aircraft, it was the largest airborne operation in history to be conducted on a single day and in one location.
The National Security Guard (NSG) is an Indian special forces unit under the Ministry of Home Affairs (MHA). It was raised in 1984, following Operation Blue Star and the assassination of Indira Gandhi, "for combating terrorist activities with a view to protect states against internal disturbances".
Operation Roast was a military operation undertaken by British Commandos, at Comacchio lagoon in north-east Italy, during the Spring 1945 offensive in Italy, part of the Italian Campaign, during the final stages of Second World War.
Clear and Present Danger is a 1994 American spy thriller film directed by Phillip Noyce and based on Tom Clancy's novel of the same name. It was preceded by the 1990 film The Hunt for Red October and the 1992 film Patriot Games, all three featuring Clancy's character Jack Ryan. It is the last film version of Clancy's novels to feature Harrison Ford as Ryan and James Earl Jones as Vice Admiral James Greer, as well as the final installment directed by Noyce.
Clear Air Force Station is a United States Air Force Station radar station for detecting incoming ICBMs and submarine-launched ballistic missiles to NORAD's command center and to provide Space Surveillance data to Air Force Space Command's Space Control Center (SCC). Clear's AN/FPS-123 Upgraded Early Warning Radar is part of the Solid State Phased Array Radar System (SSPARS) which also includes those at Beale AFB, Cape Cod AFS, RAF Fylingdales and Thule Site J. The "historic property" was one of the Alaska World War II Army Airfields and later a Cold War BMEWS site providing NORAD data to Colorado's BMEWS Central Computer and Display Facility (CC&DF).
The Launch Control Center (LCC) is a four-story building at NASA's Kennedy Space Center on Merritt Island, Florida, used to manage launches of spacecraft from Kennedy Space Center Launch Complex 39. The LCC handles all American space flights with human crews. Attached to the southeast corner of the Vehicle Assembly Building, the LCC contains offices; telemetry, tracking, and instrumentation equipment; the automated Launch Processing System; and four firing rooms.
Khyber District is a district in Peshawar Division of Khyber Pakhtunkhwa province in Pakistan. Until 2018, it was an agency of Federally Administered Tribal Areas, with merger of FATA with Khyber Pakhtunkhwa, it became a district. It ranges from the Tirah valley down to Peshawar. It borders Nangarhar Province to the west, Orakzai District to the south, Kurram District to south west, Peshawar to the east and Mohmand District in north.
RealClearPolitics (RCP) is a Chicago-based political news and polling data aggregator formed in 2000 by former options trader John McIntyre and former advertising agency account executive Tom Bevan. The site features selected political news stories and op-eds from various news publications in addition to commentary from its own contributors. The site's founders say their goal is to give readers "ideological diversity" in its commentary section.
The Department of Peacekeeping Operations (DPKO) is a department of the United Nations which is charged with the planning, preparation, management and direction of UN peacekeeping operations.
Operation Volcano was a British operation to clear a village that the Taliban were using as a command and control node, consisting of 25 compounds, near the Kajaki hydroelectric dam in February 2007. The British troops came from Troops from 42 Commando, Royal Marines and 59 Commando, Royal Engineers. During the operation, the marines received fire from Taliban forces further in the compounds and from the village of Chinah. This threat was neutralized by air assets and Royal Marine's mortars.
Operation Volcano was part of the March–May 2007 Operation Achilles.
Operation End Sweep was a United States Navy and United States Marine Corps operation to remove naval mines from Haiphong harbor and other coastal and inland waterways in North Vietnam between February and July 1973. The operation fulfilled an American obligation under the Paris Peace Accord of January 1973, which ended direct American participation in the Vietnam War. It also was the first operational deployment of a U.S. Navy air mine countermeasures capability.
The Action of 5 April 2010 was an action by the Royal Netherlands Navy to free the contatiner ship MV Taipan that had been taken by Somali pirates. It occurred during the European Union's Operation Atalanta.
Operation Migration is a non-profit, charitable organization, which developed a method utilizing ultralight aircraft to teach migration to captive-raised, precocial bird species such as Canada geese, Trumpeter swans, Sandhill cranes and most recently, endangered whooping cranes.
The 213th Space Warning Squadron of the Alaska Air National Guard provides early warning of Intercontinental ballistic missiles and Submarine-launched ballistic missiles to the Missile Correlation Center of North American Aerospace Defense Command. The squadron is a geographically separated unit assigned to the 168th Wing at Eielson Air Force Base.
