Ground crew perform maintenance on 'Lieutenant America,' a restored Douglas A-1 Skyraider, during a warbird reunion event. The A-1 Skyraider was a mainstay of U.S. Air Force close-air-support and search-and-rescue escort operations in Vietnam, flown by units such as the 1st and 6th Special Operations Squadrons. Preserved examples like this one continue to fly at airshows in tribute to the 'Sandy' and 'Spad' pilots who flew them in combat. Project: 218866