Image 0 of 51st Battalion, 143rd Infantry Regiment 173rd Airborne Brigade conducts an airfield seizure in Turzii, Romania during Exercise Saber Guardian 17. (Sgt. David Vermilyea/Army) Marine Corps Cpl. Joshua B. Duarte, left, and a South Korean marine cross a rope bridge obstacle during Korean Marine Exchange Program 17-14 in South Korea, Aug. 9, 2017. (Cpl. Aaron S. Patterson/Marine Corps) An Army carry team moves a transfer case containing the remains of Sgt. Allen Levi Stigler Jr. at Dover Air Force Base, Del., Tuesday, Aug. 15, 2017. According to the Department of Defense, Stigler, 22, of Arlington, Texas, died Aug. 13, 2017, of wounds sustained while engaged in combat operations in Iraq. (Steve Ruark/AP) Logistics Specialist Seaman Amanda Whisler fires a .50-caliber machine gun aboard the Arleigh Burke-class guided-missile destroyer USS Pinckney (DDG 91) on Aug. 16. (MC2 Craig Z. Rodarte/Navy) Soldiers right a zodiac boat during capsizing training in Burlington, Vt., Aug. 12, 2017. (Staff Sgt. Nathan Rivard/Army National Guard)