Southeast Asia War 50th Anniversary

The North American Rockwell OV-10A Bronco was a twin-turboprop short takeoff and landing aircraft. The first USAF OV-10As destined for combat arrived in Vietnam in July 1968. (photo courtesy of the Skywrighter/Niki Jahns).

Lockheed EC-121D

DAYTON, Ohio -- Lockheed EC-121D interior at the National Museum of the United States Air Force. (U.S. Air Force photo)

Lockheed EC-121D

DAYTON, Ohio -- Lockheed EC-121D interior at the National Museum of the United States Air Force. (U.S. Air Force photo)

Lockheed EC-121D

DAYTON, Ohio -- Lockheed EC-121D interior at the National Museum of the United States Air Force. (U.S. Air Force photo)

Lockheed EC-121D Cockpit

DAYTON, Ohio -- Lockheed EC-121D cockpit at the National Museum of the United States Air Force. (U.S. Air Force photo)

Sikorsky HH-3

DAYTON, Ohio -- Sikorsky HH-3 interior at the National Museum of the United States Air Force. (U.S. Air Force photo)