US Air Force Tests Unarmed Minuteman III ICBM

The US Air Force Global Strike Command (AFGSC) has conducted a test launch of an unarmed Minuteman III intercontinental ballistic missile (ICBM) from Vandenberg Space Force Base in California. However, the AFGSC stated that the launch is not in response to world events, but part of a longstanding data-driven programme aimed at evaluating the operational capability and readiness of the Minuteman III fleet.

Minuteman III ICBM Capabilities

The Minuteman III ICBM stands 59 feet 10 inches tall, weighs 78,000 pounds, and has a maximum diameter of six feet. Built by Boeing, it can travel over 6,000 miles at speeds up to 15,000 mph and reach altitudes up to 700 miles above Earth’s surface.

Meanwhile, the test comes as media outlets have reported Iran’s first operational use of its Fattah-2 hypersonic missile during current combat activities. Additionally, the launch allowed engineers and weapons experts from the 377th Test and Evaluation Group (TEG) to collect information on accuracy and reliability.

Test Launch Details

The operation, named GT 255, took place on 3 March 2026 and included two test re-entry vehicles. The missile’s re-entry vehicles travelled thousands of miles to pre-selected targets at Kwajalein Atoll in the Marshall Islands. Furthermore, data gathered during GT 255 will be distributed among stakeholders such as the Department of Defense, Department of Energy, and US Strategic Command for ongoing force development evaluation.

Therefore, the test launch of the unarmed Minuteman III ICBM demonstrates the US Air Force’s commitment to maintaining its nuclear deterrent capabilities. Finally, the AFGSC will continue to conduct tests to ensure the readiness and effectiveness of its ICBM fleet.