Spy in the Sky: Behind the Secret Satellite That Changed US surveillance

In 1965, CIA Director John McCone issued a call for a satellite with the capability to visually map the earth, photograph areas of interest and return safely to Earth.

Phil Pressel was the project engineer in charge of the design of the recently declassified Hexagon KH-9 Reconnaissance Satellite that did just that. Meeting the Challenge is his definitive account of this important chapter in U.S. intelligence and aerospace history.