The 391st Bomb Group returned to the United States in October and was inactivated at Camp Shanks, New York on 25 October 1945. The wartime 391st Bombardment Group was re-activated and re-designated as the 111th Bombardment Group, and was allotted to the Pennsylvania Air National Guard, on 24 May 1946. It was organized at Philadelphia International Airport and was extended federal recognition on 20 December 1948 National Guard Bureau. The 111th Bombardment Group was bestowed the history, honors, and colors of the 391st Bombardment Group. The squadron was equipped with Douglas B-26B/C Invaders and was assigned to the PA ANG 53d Fighter Wing. The 103d 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. Based on the World War II B-29 Bomber, the RB-29s were instead configured with multiple aerial cameras for mapping and reconnaissance missions. These RB-29s were used like the reconnaissance satellites of today, except they required actual over flight of the countries to be photographed. The 111th Strategic Reconnaissance Wing (ANG) was composed of the 129th Bomb Squadron (formerly the 3d Bombardment Squadron), the 130th Bomb Squadron (formerly the 29th Bombardment Squadron) were joined by the 103d Bomb Squadron (Light) from the Pennsylvania ANG which was redesignated as the 103d Strategic Reconnaissance Squadron (Medium). On 13 June 1952, two 111th pilots were flying an RB-29 over the Soviet Union when they were shot down by a pair of Mikoyan-Gurevich MiG-15s. The RB-29 was never recovered, having crashed in the waters off of Vladivostok, Russia. The Pennsylvanian families of the Air Guard pilots were told they had simply "vanished" in a weather-reconnaissance flight near Japan. It wasn't until the fall of the Soviet Union and the opening of communist archives that the relatives found out the truth in 1993. It is unknown as to whether any of the pilots or crew of this aircraft were captured by the Soviets at that time.