Four Air Commando officers of aircrew 'Express 19' pose before their aircraft, likely a B-26/A-26 Invader used for counter-insurgency strike missions in the early years of the Vietnam War. Maj Robert Cyril Williams, at left, was killed in action on July 1, 1966. Photographs like this one preserve the identities and service of the Air Commandos who flew dangerous low-level strike and interdiction missions from bases such as Hurlburt Field, Florida, and forward locations in Southeast Asia. Project: 218839