Colin Carroll, a former top Pentagon official, said in an interview over the weekend that he's "not sure" if Department of Defense Secretary Pete Hegseth is OK. Carroll served as the chief of staff to the deputy secretary of defense but was fired this month amid an internal investigation into Pentagon leaks.

Colin Carroll, who was fired this month from his post as chief of staff to the deputy Defense secretary, told the Megyn Kelly podcast that Hegseth was obsessed with the spread of

Defense Secretary Pete Hegseth's behavior has become "erratic" and he seems increasingly "insecure" about his job, sources told NBC News.