Marine Helicopter Squadron One

Marine Helicopter Squadron One
Unit name	Marine Helicopter Squadron One
Dates	1 December 1947 – present
Country	United States
Branch	United States Marine Corps
Type	Helicopter squadron
Role	Executive transport, support
Command structure	Marine Corps Installations Command
Garrison	MCAF Quantico, Virginia
Nickname	"Nighthawks"
Battles	Vietnam War, Operation Desert Storm, Global War on Terrorism
Aircraft helicopter	VH-3D Sea King, VH-60N White Hawk, UH-1N Twin Huey

Contents

History
Mission and operations
Aircraft
Notable incidents and deployments
Commanding officers
See also

Marine Helicopter Squadron One is a unique aviation unit within the United States Marine Corps with the primary mission of providing helicopter transportation for the President of the United States, the Vice President of the United States, and other high-ranking government officials. Known by its callsign "Marine One" when the President is aboard, the squadron operates from Marine Corps Air Facility Quantico in Virginia and maintains a forward detachment at Naval Support Facility Anacostia in Washington, D.C.. Its history is deeply intertwined with the evolution of executive transport and presidential security, tracing its lineage to the first dedicated Marine Corps helicopter unit established in the late 1940s.

History

The squadron's origins date to 1 December 1947, when it was established as HMX-1 at Marine Corps Air Station Quantico, becoming the first Marine Corps unit equipped with helicopters, initially flying the Sikorsky HO3S-1. Its early years were focused on developing tactics and doctrine for vertical envelopment, profoundly influencing amphibious warfare. The unit's role in executive support began in 1957, when President Dwight D. Eisenhower first used a Marine Corps helicopter, leading to the formal assignment of the VIP transport mission. Throughout the Cold War, the squadron supported every Commander-in-Chief while also contributing pilots and aircraft to combat operations, including the Vietnam War. Its operational history expanded through participation in Operation Desert Storm and the Global War on Terrorism.

Mission and operations

The squadron's paramount mission is the safe, secure, and timely transportation of the President of the United States under the callsign "Marine One," a task conducted in close coordination with the White House Military Office, the United States Secret Service, and the Federal Aviation Administration. Beyond this primary duty, it provides identical support for the Vice President of the United States (callsign "Marine Two"), Cabinet members, Congressional leaders, and visiting foreign dignitaries. The unit also maintains a continuous alert posture for contingency operations and national security emergencies, requiring its personnel to maintain the highest levels of readiness and discretion.

Aircraft

Throughout its history, the squadron has operated a variety of specialized helicopters. Its iconic fleet long consisted of the distinctive Sikorsky VH-3D Sea King, known for its reliability and spacious cabin, and the smaller Sikorsky VH-60N White Hawk. These aircraft are heavily modified with advanced communication suites, defensive systems, and avionics for the VIP transport mission. The squadron also utilized the Bell UH-1N Twin Huey for utility and support roles. It is currently transitioning to the new Sikorsky VH-92A Patriot, intended to replace the aging VH-3D and VH-60N fleets after extensive testing and evaluation.

Notable incidents and deployments

While operations are conducted with extreme precision, the squadron has been involved in notable historical events. During the Vietnam War, personnel and aircraft from the unit were deployed in support of combat operations in Southeast Asia. A significant tragedy occurred on 26 July 2014, when a Boeing Vertol CH-46 Sea Knight operated by a related Marine Corps training unit crashed during a routine training flight in Oregon, highlighting the inherent risks of military aviation. The squadron's aircraft are a constant presence during major National Special Security Events, such as presidential inaugurations, State of the Union addresses, and international summits like the G7 and NATO meetings.

Commanding officers

Command of the squadron is held by a Marine Corps lieutenant colonel selected for exceptional leadership and aviation expertise. The list of commanding officers includes many who later achieved flag officer rank, reflecting the position's prestige and responsibility. Command tenures typically last two to three years, with each officer overseeing the unit's complex blend of ceremonial VIP transport, daily support missions, and rigorous training cycles to maintain unparalleled standards of safety and operational security.