It is unclear who will take over at the Pentagon and the military services when the top leaders all step down Monday as President-elect Donald Trump is sworn into office. As of Friday, officials said they had not yet heard who will become the acting defense secretary.

Trump and Musk, tapped to run a new Department of Government Efficiency, have floated a variety of ideas to reform Pentagon purchasing, such as ditching the F-35 Joint Strike Fighter in favor of drones.

Pete Hegseth could hardly be more suited to be Donald Trump’s secretary of Defense — even though he’d surely be deemed unqualified by any conventional president.

Democrats repeatedly called Pete Hegseth unfit to be secretary of defense, but Republicans on the Senate Armed Services Committee expressed nothing but support for his candidacy at a confirmation hearing.

Pete Hegseth, Trump's pick to lead DoD, said troops will get back what "they lost because they were forced out due to an experimental vaccine."

Troy Meink's specialization in space could upend the priorities of a service typically dominated by Air Force interests.

The CEO of one of the world's biggest defense contractors, L3Harris Technologies, told President-elect Donald Trump's government efficiency panel in a letter on Wednesday that the Pentagon's huge contracting system is too slow and bureaucratic to meet threats posed by China and Iran and needs to be reformed.

There will be widespread closures around Capitol Hill, Washington Convention Center and the White House going into effect on Jan. 20 for President-elect Donald

Pete Hegseth, President-elect Donald Trump's choice to be defense secretary, testifies at a confirmation hearing before the Senate Armed Services Committee on Jan. 14. (Alex Brandon/AP) Controversial Defense Secretary nominee Pete Hegseth appeared unapologetic and combative at his Senate confirmation hearing on Tuesday,

Pete Hegseth vows to bring “warrior culture’” to the military if confirmed as President-elect Donald Trump’s defense secretary pick.

In Washington, Democrats and Republicans alike have supported the Pentagon’s recent work around Asia, but the return of Donald Trump, a president less personally committed to U.S. allies, will test its endurance. “The common theme I hear with regard to ...

Donald Trump's pick for Defense Secretary, Pete Hegseth, is facing stiff criticism from Democrats—but most Republicans back him.