Biden tapping Gen. Charles Brown for chairman of the Joint Chiefs

President Biden is nominating Gen. Charles "C.Q." Brown Jr. to serve as the next chairman of the Joint Chiefs of Staff, the president is expected to announce Thursday in a White House Rose Garden ceremony.

Brown is currently the Air Force chief of staff. 

The position is the nation's highest-ranking military officer, and the chairman is the primary military adviser to the president, as well as to the defense secretary and National Security Council.