The United States conducted an unarmed Minuteman III test from Vandenberg Space Force Base, with a flight path over the Pacific to a Marshall Islands target, in a routine exercise designed to validate reliability and precision.

The launch, designated GT 254, occurred as part of a comprehensive assessment to verify the ICBM system’s reliability, readiness, and accuracy, and was executed using the Airborne Launch Control System via an E-6B aircraft.

Lt. Col. Karrie Wray described GT 254 as a thorough verification that gathers critical data to ensure the ICBM weapon system can perform its mission and remain available.

Gen. S.L. Davis emphasized maintaining readiness of the existing Minuteman III fleet during the ongoing transition to the Sentinel system.

Analysts and officials continue to debate whether Russia and China are conducting tests or flouting the zero-yield standard, with some officials citing ongoing non-explosive testing and others raising concerns about potential atmospheric or subcritical activity.

As of early 2025, the U.S. nuclear arsenal is estimated at about 3,700 warheads in active and reserve, with roughly 800 allocated to ICBMs, about half deployed at any given time, and the current test fits within ongoing deterrence maintenance during modernization.

Lt. Col. Karrie Wray confirmed GT 254 is a comprehensive assessment to verify reliability and readiness, supporting continued accuracy of the ICBM system.

The test was initiated through the Airborne Launch Control System on the E-6B aircraft to test command and control reliability, with data informing system availability.

Officials note GT 254 provides essential data to ensure the ICBM can perform its critical mission and maintain data integrity for ongoing operations.

The article profiles the author and notes interest in aerospace technologies and skywatching.

Public Affairs contacts are provided for questions about the launch window, range operations, and the ICBM test mission.

Airmen from all three AFGSC missile wings supported the launch, with dedicated maintenance from the 90th Missile Wing.