After Francis Gary Powers trial, he was sentenced on August 17, 1960, to a total of ten years-three years imprisonment, followed by seven years of hard labor. He was sent to the Vladimir Central Prison, outside of Moscow.
Unbeknownst to the general public, was the secretive OVERFLIGHT operations of the CIA and their cover story, to hide the missions. In consideration that there might be an international incident, if one of the U2's were shot down or crashed for some unknown reason, the CIA came up with a plan of action.
Presuming the aircraft to be down and the pilot dead, the Eisenhower Administration, stuck with their original story. The specialized U2 that had disappeared "somewhere over Northern Turkey," was nothing more than a high-flying NASA aircraft on a "weather gathering" mission.
My first recollection of the U2 Spy plane Incident, was that a specially equipped aircraft on a "weather" gathering mission, had disappeared from radar over Turkey, and that the plane presumed down. A search was under way for the missing plane and the pilot.