Image 0 of 9U.S. Marines with Marine Aviation Logistics Squadron (MALS) 12 pull a Humvee at Marine Corps Air Station Iwakuni, Japan, July 21, 2017. (Lance Cpl. Jacob A. Farbo/Marine Corps) President Donald Trump salutes as he walks to board Marine One on the flight deck of the USS Gerald R. Ford (CVN 78) at Naval Station Norfolk, Va., Saturday, July, 22, 2017, after the commissioning ceremony of the aircraft carrier. (Carolyn Kaster/AP) Sgt. First Class Megan Brown, a Timberwolve O/C-T, provides expertise on July 19 during the airfield seizure at Bezmer Airbase, Bulgaria during Saber Guardian 2017. (Staff Sgt. Kathleen V. Polanco/Army) An Airman from the 820th Base Defense Group walks past the crew door in an HC-130J Combat King II, July 14, 2017, at Moody Air Force Base, Ga. (/Staff Sgt. Ryan Callaghan/Air Force) Soldiers with Fort Indiantown Gap's inaugural Air Assault course rappel from a UH-60 Black Hawk helicopter operated by pilots from the Eastern Army National Guard Aviation Training Site July 20, 2017. (Sgt. Zane Craig/Army) Sgt. Bob Batham of the California Army National Guard’s 1st Battalion, 140th Aviation Regiment, watches smoke and charred hills from the Garza Fire at Tar Canyon Road, Kings County, California. Five CalGuard UH-60 Black Hawks responded to the wildfire that consumed more than 40,000 acres and still actively progressing as of July 14. (Staff Sgt. Eddie Siguenza/Army National Guard) An Uraguayan competitor fires his weapon during a simulated hostage rescue mission July 22, 2017, during Fuerzas Comando in Cerrito, Paraguay. (Pfc. Lauren Sam/Army) U.S. Marines with 1st Battalion, 7th Marine Regiment, Special Purpose Marine Air-Ground Task Force-Crisis Response-Central Command, remove target stands for a stress fire range in the Middle East, July 5, 2017. The stress fire range is designed to increase the Marines’ capabilities of firing their weapon accurately under pressure. (Lance Cpl. Joshua S. McAlpine/Marine Corps) The USS Constitution, also known as Old Ironsides, rests in dry dock as water enters the basin to refloat the vessel Sunday, July 23, 2017, at Charlestown Navy Yard in Boston. The world's oldest commissioned warship afloat has undergone over two years of restoration in dry dock. (Steven Senne/AP)