FILE - Vice Chairman of the Joint Chiefs, Adm. Christopher Grady, right, arrives for a closed door briefing about the leaked highly classified military documents, on Capitol Hill, Wednesday, April 19, 2023, in Washington. Navy Adm. Christopher Grady, who currently serves as the military’s No. 2 officer as Joint Chiefs vice chairman, will simultaneously have to fill in as chairman starting Oct. 1 with the retirement of Gen. Mark Milley if his replacement, Air Force Gen. C.Q. Brown, can’t get confirmed in the next two weeks. (AP Photo/Alex Brandon, File) file photo
