An F-15E Strike Eagle receives fuel from a KC-10 Extender over an undisclosed location in Southwest Asia, July 19, 2017. The F-15E is designed to perform air-to-air and air-to-ground missions. Air Force photo by Senior Airman Preston Webb
Marines fire a nonexplosive illumination round from an 81 mm mortar to deter enemy activity at Camp Shorserack, Afghanistan, July 15, 2017. The Marines helped assist Afghan forces to clear insurgents. Marine Corps photo by Sgt. Lucas Hopkins
A Marine tosses an unmanned aerial vehicle during Sea Breeze 2017 in Shirokyi Lan, Ukraine, July 14, 2017. The multinational exercise aims to strengthen maritime security in the Black Sea region. Marine Corps photo by Cpl. Sean J. Berry
Marine Corps Cpl. Courtney Zielinski, a dog handler, controls Dundee, a military working dog, while training at Kadena Air Base in Okinawa, Japan, July 14, 2017. Marine Corps photo by Sgt. Rebecca L. Floto
Navy Petty Officer 3rd Class Robert Marsh hoists Petty Officer 2nd Class Ruslan Garver into a helicopter during drills in the U.S. 5th Fleet area of operations, July 14, 2017. Navy photo by Petty Officer 3rd Class Evan Thompson
Army Sgt. Anthony Coppola guards a post at Shoalwater Bay, Queensland, Australia, July 14, 2017, during Talisman Saber with Australian and New Zealand forces. Army National Guard photo by Sgt. Alexander Rector
An AN/TWQ-1 Avenger air defense system fires a missile over the Black Sea at Capu Midia Training Area in Romania, July 19, 2017. Photo by Army Pfc. Nicholas Vidro