A Pavehawk lifts off during a mass casualty exercise in July 2016. Members of the Alaska Air National Guard’s 210th, 211th and 212th Rescue Squadrons and 176th Security Forces Squadron, along with the 163rd SFS from the California Air National Guard, participated in the exercise on Joint Base Elmendorf-Richardson, Alaska. U.S. Air National Guard photo by Staff Sgt. Edward Eagerton A live round heads downrange as soldiers with Charlie Company, 3rd Battalion, 116th Cavalry Brigade Combat Team, Oregon Army National Guard, participate in a combined arms live fire exercise during Exercise Saber Guardian 16 at the Romanian Land Forces Combat Training Center near Cincu, Romania, Aug. 6, 2016. U.S. Army photo by Capt. John Farmer Marine Corps Cpl. Ryan Dills of the Combat Assault Company, 3rd Marine Regiment, communicates with other assault amphibious vehicles while traveling to the Royal Australian navy amphibious ship HMAS Canberra during Rim of the Pacific 2016 in the Pacific Ocean, July 18, 2016. Marine Corps photo by Staff Sgt. Christopher Giannetti A formation of F-15C Eagles assigned to the 493rd Fighter Squadron, and an F-15E Strike Eagle assigned to the 492nd Fighter Squadron, fly over Gloucestershire, England, to attend the upcoming Royal International Air Tattoo airshow held at RAF Fairford July 7, 2016. U.S. Air Force photo by Senior Airman Erin Trower U.S. Army Pfc. Shawn Bailey, assigned to the 2nd Cavalry Regiment, fires at virtual targets at the Gunfighter Gymnasium during the 2016 European Best Warrior Competition held at the 7th Army Training Command's Grafenwoehr Training Area, Germany, Aug. 7, 2016. U.S. Army photo by Pfc. Emily Houdershieldt Marines with Maritime Raid Force, 11th Marine Expeditionary Unit, approach a simulated enemy vessel during a visit, board, search, and seizure mission off the coast of San Diego, California, June 28, 2016. U.S. Marine Corps photo by Lance Cpl. Devan K. Gowans An AC-130W Stinger II assigned to the 73rd Special Operations Squadron circles training targets on Range 10 during a live-fire training mission Feb. 3, 2016, at Melrose Air Force Range, New Mexico. U.S. Air Force photo by Tech. Sgt. Manuel J. Martinez Capt. Jonathan Bonilla, a 459th Airlift Squadron UH-1N Huey pilot, performs a visual confirmation using night vision goggles during a night training sortie over Tokyo, April 25, 2016. U.S. Air Force photo by Yasuo Osakabe U.S. Army soldiers assigned to the Michigan National Guard secure a landing zone during an infiltration/exfiltration mission, part of Exercise Northern Strike, at the Joint Maneuver Training Center, Camp Grayling, Michigan, July 23, 2015. U.S. Air Force photo by SSgt Matthew B. Fredericks The new amphibious assault ship USS America (LHA 6) conducts flight operations while underway to Rim of the Pacific (RIMPAC) 2016. America, unlike her close sisters, lacks a well deck, devoting the space saved to aviation operations. U.S. Navy photo by Mass Communication Specialist 1st Class Demetrius Kennon