Senate Armed Services Committee Chairman Sen. John McCain, R-Ariz., gets on an elevator after being on the Senate floor on Capitol Hill in Washington, Thursday, June 4, 2015, to vote on amendments to the annual defense authorization bill. The GOP-led Senate plowed ahead Wednesday on a $612 billion annual defense policy bill despite a White House veto threat and the Democratic leader's claim that it is an exercise in futility.(AP Photo/Susan Walsh), APTOPIX