Th Cessna A37 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 wing tips, 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 "Super Tweet". They were sent to Vietnam 3rd Tactical Fighter Group 604th Air Assault Squadron on 17th July 1967.