Image 0 of 8Marines engage in amphibious landing and assault drills while exiting amphibious assault vehicles from USS Ashland during Blue Chromite 18, November 2, 2017, in Okinawa, Japan. The Marines simulated an attack on the enemy to complete the objective. (U.S. Marine Corps photo by Lance Cpl. Jasmine Price) U.S. Marine Corps recruits with Fox Company, 2nd Battalion, Recruit Training Regiment, move through the arm stretcher obstacle on the Confidence Course at Leatherneck Square on Marine Corps Recruit Depot Parris Island, S.C., on Oct. 31, 2017. (Lance Cpl. Colby Cooper/Marine Corps) Landing Craft Utility 1651, assigned to Naval Beach Unit (NBU) 7, returns to the amphibious dock landing ship USS Ashland (LSD 48) as part of an amphibious assault exercise during Blue Chromite. (Mass Communication Specialist 3rd Class Jonathan Clay/Navy) Capt. Ty Britt, middle, incoming commander, Coastal Riverine Group TWO (CRG 2), is piped ashore during CRG 2's change of command ceremony at Joint Expeditionary Base Little Creek-Fort Story (JEBLC-FS), Nov. 3. (U.S. Navy photo by Travis DiPerna/Released) Soldiers assigned to 5th Squadron, 7th Cavalry Regiment, 1st Brigade Combat Team, 3rd Infantry Division, maneuver through the desert during Decisive Action Rotation 18-01 at the National Training Center in Fort Irwin, Calif., Oct. 21, 2017. (Spc. Daniel Parrott/Army) Staff Sgt. Rembert Dash, 374th Aircraft Maintenance Squadron crew chief, and Maj. George Metros, 36th Airlift Squadron C-130J instructor pilot, hold the ceremonial key in front of a C-130J Super Hercules at Yokota Air Base, Japan, Nov. 3, 2017. (U.S. Air Force photo by Yasuo Osakabe) Sailors assigned to 2nd Light Armored Reconnaissance Battalion bow their heads while their battalion chaplain says a prayer during a memorial ceremony for the late Petty Officer 3rd Class Benjamin P. Castiglione of Howell, Michigan Nov. 3, 2017. Castiglione was a hospital corpsman with the unit and was killed by an improvised explosive device in Qal Yeh Now, Afghanistan Sept. 3rd, 2009 as part of Operation Enduring Freedom. He was 21. (U.S. Marine Corps photo by Sgt. Matthew Callahan) From left, Col. Clint H. Kirk, Chief of Staff, U.S. Army Africa, and Maj. Gen. Steven A. Shapiro, Commanding General, 21st Sustainment Support Command, pose for a photograph in the USARAF commander’s office during a recent visit to Caserma Ederle, Vicenza, Italy Nov. 3, 2017. (Antonio Bedin/Army)