A B-52H Stratofortress assigned to the 20th Expeditionary Bomb Squadron is parked on the ramp at Al Udeid Air Base, Qatar on Thursday, May 9, 2019. The B-52 bombers ordered by the White House to deploy to the Persian Gulf to counter unspecified threats from Iran are beginning to arrive at a major American air base in Qatar. (Senior Airman Keifer Bowes, U.S. Air Force via AP)