606th Special Operations Squadron

• Origins in Vietnam: The 606th Special Operations Squadron (SOS) was activated in 1967 during the Vietnam War, primarily to conduct night interdiction and close air support missions. • Callsign "Nimrod": The squadron’s radio callsign was “Nimrod,” a name that became closely associated with its daring night operations. • AC-47 "Spooky" Gunships: The unit operated the Douglas AC-47 "Spooky" gunships, a heavily armed variant of the C-47 transport, equipped with side-firing miniguns. • Nighttime Hunter-Killers: The 606th specialized in night missions, providing illumination and suppressing enemy movements along the Ho Chi Minh Trail, disrupting North Vietnamese supply lines. • Operation Commando Hunt: The squadron played a key role in Operation Commando Hunt, a U.S. campaign targeting the Ho Chi Minh Trail from 1968 to 1972. • Secret War in Laos: The 606th operated covertly in Laos, supporting CIA-led operations and Royal Laotian forces, often under the cover of darkness. • Forward Air Control (FAC): In addition to gunship duties, the unit provided Forward Air Control for airstrikes, guiding other aircraft to targets on the ground. • Stationed at Nakhon Phanom: The squadron was based at Nakhon Phanom Royal Thai Air Force Base in Thailand, a major hub for U.S. Air Force special operations in Southeast Asia. • Disbandment: The 606th SOS was inactivated in December 1971 as U.S. involvement in Vietnam wound down and newer aircraft replaced the AC-47s. • Legacy: The “Nimrod” squadron’s innovative tactics and courage under fire influenced later special operations doctrine and are honored in Air Force special operations history.