Six members of a U.S. Air Force EC-121 Warning Star flight crew stand before their aircraft at Naval Station Keflavik, Iceland. The Aircraft Commander, at left, wears the distinctive 'A-C' cap marking used to identify the crew's senior pilot. Crews like this one flew extended overwater radar patrols as part of the 552nd Airborne Early Warning and Control Wing's Cold War mission defending the GIUK Gap. Project: 218711