Soldiers fire the main weapon of an M1A2 Abrams tank during a gunnery qualification event at the Rodriguez live fire complex in South Korea, Nov. 28, 2017. The soldiers are assigned to the 1st Battalion, 8th Cavalry Regiment. Army photo by Sgt. Patrick Eakin
Marines conduct physical training aboard the dock landing ship USS Oak Hill in the Atlantic Ocean, Nov. 30, 2017, during a training exercise to prepare for an upcoming deployment. The Marines are assigned to Fox Company, Battalion Landing Team, 2nd Battalion, 6th Marine Regiment. Marine Corps photo by Staff Sgt. Dengrier M. Baez
Sailors part of the rifle detail bow their heads in prayer during a Burial at Sea ceremony held on the starboard aircraft elevator of the amphibious assault ship USS Iwo Jima. U.S. Navy photo by Hunter S. Harwell
Navy Seaman Kiara Jones practices using an ophthalmoscope, a tool used to exam eyes, during a drill on the USS John C. Stennis in Bremerton, Wash., Nov. 29, 2017. The Stennis conducted routine training as it prepared for its next deployment. Navy photo by Jonathan Jiang
An airman fires an M9 pistol during small-arms live-fire sustainment training at Joint Base Elmendorf-Richardson, Alaska, Nov. 29, 2017. The airman is assigned to the 3rd Air Support Operations Squadron. Air Force photo by Alejandro Peña
