U.S. Air force has successfully test-fired Minuteman III ICBM Intercontinental ballistic missile 20.

The launch team, under the direction of the 576th Flight Test Squadron, Vandenberg AFB, included Airmen from the 341st Missile Wing, Malmstrom AFB, Mont., and the 625th Strategic Operations Squadron, Offutt AFB, Neb.

“The test launch is one demonstration of the professionalism and pride all members of Team Malmstrom take in executing our mission,” said Lt. Col. Thomas Vance, 341st Missile Wing task force commander.

Malmstrom AFB is one of three missile bases with crew members standing alert 24/7 year-round, overseeing the nation’s 450 ICBMs.

The entire ICBM community, including the Department of Defense, the Department of Energy, and U.S. Strategic Command will use the data collected from this mission for continuing force development evaluation.

The ICBM test launch program demonstrates the operational credibility of the Minuteman III and ensures the United States’ ability to maintain a strong, credible nuclear deterrent as a key element of U.S. national security and the security of U.S. allies and partners.

The LGM-30G Minuteman-III program started in 1966, and included several improvements over the previous versions. It was first deployed in 1970. A total of 450 LGM-30G missiles are emplaced at F.E. Warren Air Force Base, Wyoming (90th Missile Wing), Minot Air Force Base, North Dakota (91st Missile Wing), and Malmstrom Air Force Base, Montana (341st Missile Wing).