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

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, according to new rules issued by the Pentagon on Tuesday.

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.

The Pentagon has issued new rules that would prevent people currently treated for schizophrenia, congestive heart failure, having a donated organ or some other issues from receiving a medical

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.

Justin Fulcher started at the Defense Department as a member of DOGE. He was later promoted to a post as senior adviser to Defense Secretary Pete Hegseth.

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."

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.