Plaque commemorating the transfer of the PAR from the U.S. Army to the U.S. Air Force. (HAER ND-9-P-42 003001) This commemorates the transfer from the U.S. Army Ballistic Missile Defense Organization to the U.S. Air Force Aerospace Defense Command of the Safeguard Ballistic Missile Defense System Perimeter Acquisition Radar (PAR) -- the last operational element of the free world's first defense against ballistic missile attack. The PAR and the other Safeguard subsystems represent a generation of scientific and technological advance and symbolize the power of the United States' technological supremacy. May the PAR, in its new role as the Concrete Missile Early Warning Station, continue as a reminder that peace is never permanently won, but only from instant to watchful instant.

John G. Jones Brigadier General, United States Army Ballistic Missile Defense Program Manager 1 October 1977