Posted: Sun, Mar 1, 2026, 11:49 AM ET (1649 GMT)

The Space Force is pausing use of United Launch Alliance's Vulcan rocket after an anomaly on a launch earlier this month. The service said Wednesday that it will not fly national security missions on Vulcan while an investigation continues into the USSF-87 launch Feb. 12, when ULA reported an "observation" with one of the rocket's strap-on boosters. The incident was similar to one on Vulcan's second flight in October 2024, when a nozzle on one of the solid boosters came off in flight. A halt in national security launches is a setback for ULA as it seeks to increase Vulcan's flight rate and establish a steady operational tempo. The company recently projected 18 to 22 launches this year.