A wreath sits on display after the conclusion of a wreath laying ceremony for Marine Corps Sgt. Bryan K. Burgess at The Spirit of Detroit on Sept. 6, 2017. (Lance Cpl. Cristian L. Ricardo/Marine Corps)
A U.S. Air Force F-15C Eagle configured as a quickreaction aircraft remains ready to execute Baltic Air Policing operations at Siauliai Air Base, Lithuania, Sept. 4, 2017. (Tech. Sgt. Matthew Plew/Air Force)
South Korean marines participate in an exercise on Sept. 6, 2017, in Baengnyeong Island, South Korea. The exercise aims to defend a front-line island. (South Korean Defense Ministry via Getty Images)
Navy Band Southwest performs before an LA Dodgers game Sept. 4, 2017, during the second annual Los Angeles Fleet Week. (MC1 Derek Stroop/Navy)
Nebraska Air National Guard Capt. Ryan Becker, a medical doctor, gives a Vidor, Texas, resident medical treatment Sep. 5, 2017. The field hospital, set up in the parking lot of Vidor High School, allows residents easy access to medical care in areas heavily affected by Hurricane Harvey. (Airman 1st Class Nicholas Dutton/Air Force)
U.S. Marines from the 15th Marine Expeditionary Unit post security off a convoy during Alligator Dagger on Sept. 6, 2017, in Djibouti. (Tech. Sgt. Joe Harwood/Air National Guard)
Members of the Texas National Guard prepare to distribute water and emergency meals in Orange, Texas, on Sept. 6, 2017, as Texas slowly moves toward recovery from the devastation of Hurricane Harvey. (Spencer Platt/Getty Images)
Air Force Senior Airman Sean Harris, 44th Aircraft Maintenance Unit weapons load team member, inspects the connection between a belt of M-61A1 cannon rounds and an F-15 Eagle during an exercise Sept. 6, 2017, at Kadena Air Base, Japan. (Senior Airman Quay Drawdy/Air Force)
Aviation Boatswain’s Mate (Handling) Airman Haley Baker signals to the pilot of a CH-53E Super Stallion as the helicopter takes off from the flight deck of the amphibious assault ship USS Bonhomme Richard (LHD 6) on Sept. 7, 2017, in the Coral Sea. (MCS Seaman Cosmo Walrath/Navy)
Sailors participate in the Navywide E-6 advancement exam on Sept. 7, 2017, on the mess decks of the amphibious assault ship USS Bonhomme Richard (LHD 6) in the Coral Sea. (MC2 Cameron McCulloch/Navy)
Defense Secretary Jim Mattis formally swears in Secretary of the Navy Richard V. Spencer during a Sept. 7, 2017, ceremony at the Pentagon in Washington. Spencer was confirmed as the 76th secretary of the Navy by the Senate on Aug. 1, 2017. (Army Sgt. Amber I. Smith/DoD)
Command Master Chief Johannes Gonzales, left, and Logistics Specialist 1st Class Jesus Manriquez stack sand bags into a truck Sept. 6, 2017, in Mayport, Fla., to pre-stage them around USNAVSO/FOURTHFLT headquarters in preparation for Hurricane Irma. (MC2 Michael Hendricks/Navy)
