A history of satellite reconnaissance

Perry, Robert L.

The United States developed the Gambit and Hexagon imagery satellite systems in the 1960's to improve the nation's means for peering over the iron curtain that separated western democracies from East European and Asian communist countries. The programs were declassified in September of 2011, after which redacted documents and histories were released to the public, including the two contained in this volume. --Summarized from Preface.