Staff Sgt. Brian Vosper, the 379th Expeditionary Civil Engineer Squadron explosive ordnance disposal flight team leader, walks to the vehicle search exercise location at Al Udeid Air Base, Qatar, Aug. 26, 2017. (Tech. Sgt. Amy M. Lovgren/Air Force)
U.S. Marine Sgt. Nathan Perrow, right, squad leader, Company I, 3rd Battalion, 4th Marine Regiment, Marine Rotational Force Darwin, and Cpl. Jia Qiang Zhan, a soldier from The Chinese People’s Liberation Army, celebrate after completing a kayaking expedition Aug. 25, 2017, during Exercise Kowari 2017 at Fitzroy Island, Australia. (Sgt. Emmanuel Ramos/Marine Corps)
Combat engineers from the 29th Brigade Engineer Battalion, 3rd Brigade Combat Team, 25th Infantry Division, and Marines from the 2nd Battalion, 3rd Marine Regiment, brace themselves during a live explosive door breaching on Aug. 30, 2017, at Schofield Barracks, Hawaii. Army combat engineers and Marines trained together on a variety of door breaching techniques. (Staff Sgt. Armando R. Limon/Army)
The Arleigh Burke-class guided-missile destroyer USS Oscar Austin (DDG 79) transits the Arctic Circle on Sept. 5, 2017. (MC2 Ryan U. Kledzik/Navy)
E-8C Joint STARS aircraft sit on a flightline at Robins Air Force Base, Ga., prior to one of the aircraft departing on a mission in support of Hurricane Harvey relief efforts on Sept. 1, 2017. Team JSTARS aircrews provided radio relay and aircraft communications deconfliction and procedural control for Hurricane Harvey search and rescue operations. (Airman 1st Class Amanda Bodony/Air National Guard)
Army coach Jeff Monken takes the field at Michie Stadium at West Point, N.Y., on Sept. 1, 2017, where the Black Knights defeated Fordham, 64-6. (2nd Lt. Austin Lachance/West Point)
A landing craft, air cushion assigned to Assault Craft Unit 4 enters the well deck of the amphibious assault ship USS Kearsarge (LHD 3) on Aug. 30, 2017, in Norfolk, Va. Kearsarge is onloading personnel, equipment and supplies in preparation to assist with disaster relief efforts in wake of Hurricane Harvey. (MC3 Kaitlyn E. Eads/Navy)
Staff Sgt. Ruth Hanks, Sentinel, 4th Battalion, 3d U.S. Infantry Regiment (The Old Guard), left, is seen Sept. 3, 2017, during her last walk ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery, Va. Hanks is the fourth female Sentinel to guard the Tomb of the Unknown Soldier and has been guarding the tomb since September 2015. (Pvt. Lane Hiser/Army)
Photo from the flight deck of the MAFFS 6, from the California National Guard's 146th Airlift Wing. The MAFFS-equipped C-130 aircraft is battling the Pier Fire. (National Guard)
Capt. Josh Jackson, right, commander of Explosive Ordnance Disposal Group (EODGRU) 2, commissions Chief Navy Diver Josh Baker, left, as a chief warrant officer on Aug. 30, 2017, during an underwater commissioning ceremony in the EODGRU 2 dive tank on Joint Expeditionary Base Little Creek at Virginia Beach, Va. (MC2 Charles Oki/Navy)
Two C-130 Hercules aircraft and 14 airmen from the 123rd Airlift Wing deploy from the Kentucky Air National Guard base in Louisville, Ky., Sept. 1, 2017, bound for Texas, where they will fly humanitarian aid and airlift evacuation missions in the aftermath of Hurricane Harvey. (Lt. Col. Dale Greer/Air National Guard)
An EA-18G Growler aircraft assigned to the "Vikings" of Electronic Attack Squadron (VAQ-129) takes off from Naval Air Station Whidbey Island (NASWI) Sept. 5, 2017, as part of the F/A-18 Hornet 10 million flight-hour anniversary. The F/A-18 10 million flight-hour anniversary celebrates 10 million hours flown across the F/A-18 Hornet, F/A-18E/F Super Hornet and EA-18G Growler classes of aircraft. (MC2 Scott Wood/Navy)