The Cessna T-37/A-37, known in various forms as the Tweety Bird, Tweet, Dragonfly, or Super Tweet, is one of the most prominent of the trainer-attack type aircraft. This small, economical dual-engine jet aircraft flew for decades as a primary trainer for the United States Air Force, and served with distinction in an attack role during the Vietnam War. The T-37/A-37 has also provided a wide range of service in the air forces of other nations.[citation needed]

Fifty-two years after its first flight, the T-37 is still serving the U.S. military, giving the United States Air Force-trained primary pilot training students the necessary experience needed before moving on to the Northrop T-38 Talon, Beech T-1A Jayhawk, Bell UH-1F Huey, United States Navy Beech T-44 Pegasus, or other advanced Navy, Marine Corps or Allied trainers. Over 1,000 Cessna T-37s were built, with more than 100 still serving in the United States Air Force.