The Cessna A-37 Dragonfly was developed from the T-37 trainer for the military action in Vietnam. A series of new components such as one GAU-2B/A 7.62mm minigun, two drop tanks on the wingtips, three weapon stations under each wing, stronger landing gears and two more powerful J85 engines were applied to the aircraft.
The new A-37A was named by the pilots as 'Super Tweet'.They were sent to Vietnam as the 3rd Tactical Fighter Group,604th Air Assault Squadron on 17th July 1967.