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An aerial image of Clear SFS in 1999. / 64.29056°N 149.18694°W / 64.29056; -149.18694. Clear Space Force Station is a United States Space Force radar station for detecting incoming ICBMs and submarine-launched ballistic missiles [1] to NORAD 's command center and to provide Space Surveillance data to the United States Space Force.
SAM 29000, one of two VC-25As used as Air Force One, approaching Dayton International Airport in October 2012. Air Force One is the official air traffic control designated call sign for a United States Air Force aircraft carrying the president of the United States. The term is commonly used to denote U.S. Air Force aircraft modified and used to ...
A VC-137C with Air Force serial number 62-6000, [a] SAM 26000 was a customized Boeing 707. It entered service in 1962 during the administration of John F. Kennedy and was replaced in presidential service in 1972 but kept as a backup. The aircraft was finally retired in 1998 and is now on display at the National Museum of the United States Air ...
The Boeing VC-25 is a military version of the Boeing 747 airliner, modified for presidential transport and commonly operated by the United States Air Force (USAF) as Air Force One, the call sign of any U.S. Air Force aircraft carrying the president of the United States. Only two examples of this aircraft type are in service; they are highly ...
VC-137C SAM 27000. SAM 27000 was the second of two Boeing VC-137C United States Air Force aircraft that were specifically configured and maintained for the use of the president of the United States. It used the call sign Air Force One when the president was on board, and at other times it used the call sign SAM 27000 (spoken as 'SAM two-seven ...
Boeing 747-200. The Boeing E-4 Advanced Airborne Command Post ( AACP ), the current "Nightwatch" aircraft, [2] is a strategic command and control military aircraft operated by the United States Air Force (USAF). The E-4 series are specially modified from the Boeing 747-200B for the National Emergency Airborne Command Post ( NEACP) program.
Columbine II. Columbine II is a Lockheed VC-121A-LO Constellation (Air Force Serial Number 48-8610, Lockheed Model 749-79-36); the aircraft that was to become the first plane to use the Air Force One callsign and the only presidential aircraft ever sold to a private party. The aircraft was ferried from long-term storage in the Sonoran Desert at ...
Hafele and Keating obtained $8000 in funding from the Office of Naval Research for one of the most inexpensive tests ever conducted of general relativity. Of this amount, $7600 was spent on the eight round-the-world plane tickets, including two seats on each flight for "Mr. Clock." They flew eastward around the world, ran the clocks side by ...