Decades later, a Cold War secret is revealed

In this Thursday, Dec. 1, 2011 photo, Fred Marra, left, listens as Bob Zarba describes the camera operation of the Hexagon KH-9 secret spy satellite in Danbury, Conn. They have been meeting here for 18 years, whiling away a few hours nattering about golf and politics, ailments and grandchildren. But, until recently, they were forbidden to speak about the greatest achievement of their professional lives. ((AP Photo/Kathy Willens))

December 26, 2011 4:21:00 PM PST
For more than a decade they toiled in the strange, boxy-looking building on the hill above the municipal airport, the building with no windows (except in the cafeteria), the building filled with secrets.