The initiative hadn’t been planned to include xAI’s Grok model as recently as March, the former Pentagon employee said.

The Pentagon says people with congestive heart failure, undergoing treatment for schizophrenia or who have a history of paraphilic disorders will no longer be eligible for a medical waiver to serve in the military.

Leading the review has been Elbridge Colby, the Pentagon's Under Secretary of Defense for Policy, who has previously expressed concern that the U.S. would lose submarines to Australia at a critical time for deterrence against China. The congressmen copied their letter to him.

As a direct report to the deputy secretary of defense, Guetlein has authority to bypass competitive hiring procedures as he builds his Golden Dome team.

Pete Hegseth has lost his sixth senior aide in as many months, with the defence secretary’s struggle to retain key staff leaving the Pentagon in limbo.

Justin Fulcher confirmed to Fox News Digital that he voluntarily resigned after six months as a senior advisor to Defense Secretary Pete Hegseth, calling his service “inspiring."

LOS ANGELES (AP) — Seven hundred Marines sent to Los Angeles will leave the city, the Pentagon said Monday. The Marines were sent to the city in June alongside 4,000 National Guard soldiers in response to protests over the Trump administration’s ongoing immigration raids around the city.

Pentagon press releases say 20,000 federal troops have deployed to support ICE across the country. The real number may be markedly higher.