21st TASS

• Origins in World War II: The 21st Tactical Air Support Squadron (TASS) traces its roots to the 21st Bombardment Squadron, which was activated in 1942 and served in the China-Burma-India Theater during World War II. • Vietnam War Service: The 21st TASS was reactivated in 1965 and played a crucial role in the Vietnam War, providing Forward Air Control (FAC) for ground forces and directing air strikes against enemy targets. • Callsign "Nail": Pilots of the 21st TASS were famously known by the callsign "Nail," a reference that became synonymous with their exceptional FAC missions in Southeast Asia. • Aircraft Variety: The unit operated several aircraft during its service, including the O-1 Bird Dog, O-2 Skymaster, and OV-10 Bronco, all known for their agility and suitability for FAC missions. • Key Role in Operation Ranch Hand: The 21st TASS supported defoliation missions (Operation Ranch Hand), helping to coordinate the controversial use of Agent Orange. • Decorations and Honors: The squadron earned multiple Air Force Outstanding Unit Awards and the Republic of Vietnam Gallantry Cross with Palm for its distinguished service in combat. • Training and Innovation: The 21st TASS helped develop new FAC tactics and procedures that have influenced U.S. Air Force doctrine to this day. • Surprise Night Missions: "Nail" pilots often flew dangerous night missions, using flares and their own ingenuity to support ground troops under fire. • International Partnerships: The unit worked closely with South Vietnamese and other allied forces, providing critical air support and building lasting military relationships. • Inactivation and Legacy: The 21st TASS was inactivated in 1973 after the U.S. withdrawal from Vietnam, but its legacy endures in current Air Force FAC and close air support operations.