It's hard to tell just where retired General Mark Milley's portrait once hung in the Pentagon's prestigious E-ring hallway, alongside all of the former chairmen of the Joint Chiefs of Staff.

Presented by Lockheed Martin —{beacon} Defense &National Security Defense &National Security PRESENTED BY LOCKHEED MARTIN The Big Story Trump’s back, here’s what it

The outgoing Biden administration hasn’t designated a senior official to act as defense secretary during the transition, raising the question of who will be in charge at the Pentagon until the Trump administration installs an individual to execute orders.

It would be very hard for a president to override the advice he was getting from the secretary and the chairman [of the joint chiefs of staff],” noted Dick Cheney, who ran the Pentagon for George H.W.

A video shared on Instagram claims the Pentagon gave money to YouTube star Jimmy MrBeast Donaldson in an effort to persuade children to want to enlist in the army. Verdict: False Although the Pentagon and MrBeast were going to work on content together,

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.

All of that could soon fall on the shoulders of Pete Hegseth. The 44-year-old combat veteran and former TV cable news host is President-elect Donald Trump’s pick to lead the Pentagon.

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.

Rep. Michael Waltz (R-FL) (L) introduces U.S. President-elect Donald Trump's nominee for Secretary of Defense Pete Hegseth during his Senate Armed Services confirmation hearing on Capitol Hill on Jan. 14, i Washington, D.C. (Getty Images)

The Pentagon removed a portrait of retired Gen. Mark Milley that hung with paintings of other former chairs of the Joint Chiefs of Staff, just hours after President Donald Trump was sworn in on Monday, The New York Times reported. A U.S. official told the newspaper that the White House ordered the takedown.