LANGLEY AIR FORCE BASE, Va. - Master Sgt. Robert Casagrande, Air Combat Command joint surveillance and target attack radar system manager, talks to retired Col. Frederick Crow, an F-4C pilot and prisoner of war during the Vietnam War, at the newly constructed POW/MIA Memorial Sept. 3. (U.S. Air Force photo/Airman 1st Class Gul Crockett)