The Cessna O-2 Skymaster, a military version of the Cessna 337 Super Skymaster, was a unique twin-engine, high-wing aircraft with engines in a push-pull configuration. Serving primarily as a forward air control (FAC) aircraft during the Vietnam War, it was valued for its excellent visibility and the reliability of its twin engines, allowing it to better withstand ground fire. Some O-2s were also adapted for psychological warfare missions, equipped with loudspeakers and leaflet dispensers. Its role in spotting targets and directing air strikes made it a familiar sight in the skies over Southeast Asia until its eventual replacement in the FAC role.