Air Force Global Strike Command has declared the Boeing MH-139A Grey Wolf operational for the U.S. nuclear missile security mission, clearing the helicopter for use across the service’s intercontinental ballistic missile fields. The milestone was reached on 10 August and made public on 31 August, with the 40th Helicopter Squadron at Malmstrom Air Force Base in Montana among the first units to field the aircraft.
The Grey Wolf is replacing the UH-1N Huey, which has supported missile-field security and convoy escort since 1970. AFGSC is positioning the new helicopter for escort of Minuteman III maintenance and armed security convoys, as well as patrols over missile-field operations at Malmstrom, F.E. Warren Air Force Base in Wyoming and Minot Air Force Base in North Dakota.
The command has described the MH-139A as nearly 50% faster than the Huey, with twice the troop capacity and improved defensive systems. It has already flown operational convoy missions, including an escort task in January, and the latest step moves the Boeing programme from testing into fielded operations tied to the nuclear force protection mission.
The missile-field area covered by the force spans roughly 33,600 square miles. The transition also aligns with the broader shift to Sentinel as Minuteman III facilities are phased out, extending the aircraft’s role in the Air Force’s nuclear deterrent support structure.