 In addition to Jennies, the 104th flew a variety of other aircraft during the interwar period, almost all of them two-seat biplanes.Conducted annual summer training at various locations to include Langley Field, VA; Shepard Field, Martinsburg, WV; Middletown Air Depot, PA; and at Detrick Field, Frederick, MD.At the outset of World War II the 104th became part of the Antisubmarine Patrol used along the East Coast.