The U.S. Marine Drum and Bugle Corps performs during an evening parade at Marine Barracks Washington, D.C., June 10, 2016. Marine Corps Lt. Gen. Michael G. Dana, deputy commandant for installations and logistics, hosted the event, and U.S. Sen. Maize Hirono of Hawaii was the guest of honor. Marine Corps photo by Cpl. Chi Nguyen Army Secretary Eric Fanning inspects soldiers during his welcome ceremony at Joint Base Myer-Henderson Hall, Virginia, June 20, 2016. DOD photo by Navy Petty Officer 1st Class Tim D. Godbee Re-enactors with the 6th New York Light Artillery fire a Civil War-era cannon at dusk during the 153rd anniversary of the Battle of Gettysburg in Gettysburg, Pennsylvania, July 2, 2016. The re-enactors included veterans from the Army, Navy, Marines, and Army National Guard. Air National Guard photo by Staff Sgt. Christopher S. Muncy A soldier in basic training falls several feet out of a training obstacle onto a mat during the confidence course at Fort Jackson, South Carolina, June 22, 2016. Army photo by Sgt. 1st Class Brian Hamilton Pilots with the Thunderbirds, the Air Force’s flight demonstration team, perform during the Warriors over the Wasatch air show at Hill Air Force Base, Utah, June 25, 2016. Air Force photo by Tech. Sgt. Christopher Boitz A Landing Craft Air Cushion approaches the well deck of amphibious transport dock ship USS San Diego during Rim of the Pacific 2016 in the Pacific Ocean, June 21, 2016. Twenty-six nations and 25,000 personnel are participating in RIMPAC. Navy photo by Petty Officer 1st Class Joseph M. Buliavac Army Sgt. Kawaiola Nahale competes in a freestyle event during the 2016 Department of Defense Warrior Games at the U.S. Military Academy in West Point, New York, June 20, 2016. DOD photo by Roger Wollenberg Coast Guard members help stranded residents to safety and a waiting multi-terrain vehicle during severe flooding in near Clendenin, West Virginia, June 24, 2016. Coast Guard photo A soldier from 2nd Cavalry Regiment fires an FGM-148 Javelin during the combined arms live-fire training exercise for Saber Strike 16 at the Estonian Defense Forces central training area near Tapa, Estonia, June 19, 2016. The U.S. Army Europe-led training exercise is designed to improve joint interoperability through a range of missions to prepare the 14 participating nations to support multinational contingency operations. Minnesota National Guard photo by Army Sgt. 1st Class Ben Houtkooper Navy Aviation Boatswain's Mate (Equipment) Airman Reymart Rosario signals the launch of an aircraft on the flight deck of the USS Harry S. Truman in the Mediterranean Sea, June 14, 2016. Navy photo by Petty Officer 2nd Class Ethan T. Miller