The 839th Bombardment Squadron is an inactive United States Army Air Forces unit. It was activated in January 1941 as the 79th Bombardment Squadron and equipped with Douglas A-20 Havoc light bombers. Following the attack on Pearl Harbor the squadron began to fly antisubmarine patrols off the Atlantic coast and over the Caribbean Sea, becoming the 8th Antisubmarine Squadron.

The 487th Air Expeditionary Wing is a provisional United States Air Force unit assigned to the United States Air Forces in Europe. As a provisional unit, it may be activated or inactivated at any time. The unit's last known assignment was in 2003 at Cairo West Air Base, Egypt, during Operation Iraqi Freedom.