On February 22, 1995, an era of state secrecy reached a measured, bureaucratic conclusion. An executive order declassified the Corona program. The language was dry. It listed project designations: Keyhole-1 through Keyhole-4. It noted the number of missions: 145. It confirmed the period of operation: August 1960 to May 1972. There were no flourishes. The power of the statement lay in its simple admission of a long-held public certainty and private denial.
The program’s mechanics were laid bare. Corona satellites were launched under the public cover of scientific research. They carried panoramic cameras and miles of specially formulated film. After exposing their film, the satellites would jettison capsules that parachuted through the atmosphere, to be snatched mid-air by specially equipped military aircraft over the Pacific. The imagery had a ground resolution eventually fine enough to distinguish objects roughly six feet in size. It counted missile silos, mapped airfields, charted naval bases.
The disclosure was a recalibration of the historical record. It confirmed what analysts had pieced together, what journalists had suspected. It allowed the millions of feet of film, stored in vaults, to be transferred to the National Archives. Scientists could use it to study glacial retreat from the 1960s. Cartographers could correct outdated maps. The event was not an apology, nor a revelation. It was an administrative adjustment, a transfer of knowledge from the closed ledgers of intelligence to the open shelves of history. The sky, it turned out, had always been watching.