The U.S. Space Force is putting an indefinite halt on all national security missions aboard United Launch Alliance's Vulcan Centaur, following a repeat anomaly with the rocket's side boosters.

United Launch Alliance is preparing its Vulcan Centaur rocket for a major national security mission from Cape Canaveral, a flight that will test whether this new workhorse can deliver for the U.S.

Tory Bruno, president and CEO of the United Launch Alliance (ULA), has hinted that the company is working on improving the reusability of its Vulcan Centaur heavy-lift launch vehicle. He suggested ...