20th Helicopter Squadron

The 20th Helicopter Squadron, nicknamed the "Green Hornets," was activated during the Vietnam War in 1965 as part of the U.S. Air Force. The squadron specialized in unconventional warfare, primarily conducting covert operations, search and rescue, and insertion of special operations forces deep behind enemy lines. Flying modified Sikorsky CH-3 and later Bell UH-1F/P helicopters, the 20th played a critical role in supporting the Studies and Observations Group (SOG) and other classified missions along the Ho Chi Minh Trail. The bravery and skill of its crews became legendary, earning the squadron numerous commendations before it was inactivated in 1972.