STS-62-A

STS-62-A was a planned NASA Space Shuttle mission to deliver a reconnaissance payload into polar orbit. It was expected to use Discovery. It would have been the first crewed launch from Vandenberg Air Force Base in California, and the first crewed mission to go into polar orbit.
The mission designation, STS-62-A, meant: 6=fiscal year 1986, 2=Vandenberg, and A=first flight from that launch site in that fiscal year.

Post-''Challenger'' accident

The destruction of Challenger and subsequent halt of the Space Shuttle program led to the cancellation of the mission.
Guy Gardner, Jerry Ross, and Mike Mullane were members of the second post-Challenger mission STS-27 — a classified mission for the DoD — during which the Lacrosse-1 radar reconnaissance spacecraft was allegedly deployed.