>>13619276>>13619316Also the first to last more than 3 years was USA-6, launched in, December 1984, which lasted for about 10 years (until November 1994).
1984 coincides with around about the time the shuttle program was getting into the swing of things. The first Shuttle EVA was in 1983, as was the first deployment and retrieval of a Shuttle pallet satellite. In other words, the KH-11s suddenly started lasting more than twice as long as soon as the Shuttle demonstrated the ability to service satellites...
