Reconnaissance satellites which form the principal component of the Satellite Early Warning System currently used by the United States.
An effort to recover radioactive material from a downed satellite was dubbed Operation Morning Light.
Miscellaneous Records on Spy Satellites
One of the Navy’s most advanced deep sea submersible at the time, surfaced with part of a U.S. spy satellite, codenamed HEXAGON.
History of Satellite Reconnaissance
Corona Satellite / Discoverer Program