The Philadelphia 103d Bomb Squadron was federalized on 10 October 1950 along with its parent 111th Composite Wing due to the Korean War. Many of the pilots and maintenance personnel were split off and sent for duty overseas as individuals assigned to other combat units there. Eventually the B-26 bombers were sent as reinforcement aircraft to Far East Air Force for use in Korea. On 10 April 1951 the squadron and Wing were moved to Fairchild AFB, Washington and re-equipped with RB-29 Superfortress reconnaissance aircraft.