FILE – In this May 15, 2020 file photo, Joint Chiefs Chairman Gen. Mark Milley speaks during the presentation of the Space Force Flag in the Oval Office of the White House with President Donald Trump, in Washington. The nation’s top military officer says it was a mistake for him to have been in Lafayette Square with President Donald Trump last week. Army Gen. Mark Milley, chairman of the Joint Chiefs of Staff, says his presence “created a perception of the military involved in domestic politics.” (AP Photo/Alex Brandon)