A sailor from USS John C. Stennis (CVN 74) observes a test of a jet engine on the ship's fantail. John C. (Mass Communication Specialist 2nd Class Luke Moyer/Navy)
2nd Lt. Mark Sinanan, signal officer, Joint Force Headquarters, carries a box of Meals-Ready-to-Eat and water for a civilian at the St. Croix Educational Complex High School, one of the four points of distribution, Friday, Sept. 22, 2017. Hurricane Maria, a Category 5, left St. Croix devastated after making landfall early Wednesday, Sept. 20. (Pfc. Chenelle Brady/Army)
From left, Sgt. John Harrington, a flight medic from Company C, 3-126th Aviation Regiment, sits next to Staff Sgt. Dave Gulino and Staff Sgt. Chris Moore -- all part of the crew of a Connecticut Army National Guard CH-47 Chinook helicopter from Company B, 2-104th General Support Aviation Battalion, while completing a survey mission in northern Florida, Sept. 13, 2017, after Hurricane Irma. (Spc. Lisa Crawford/Army National Guard)
U.S. Soldiers assigned to Headquarters, Headquarters Company, 3rd Battalion, 21st Infantry Regiment, 1st Stryker Brigade Combat Team, 25th Infantry Division, conduct a live fire exercise utilizing a RMS6L 120mm mortar system on a M1129 Mortar Carrier as part of exercise Orient Shield 2017 at Camp Fuji, Japan. (Mass Communication Specialist 2nd Class Christopher Lang/Navy)
U.S. Marine Corps Gunnery Sgt. Matthew Branch dives into the pool during swim practice in the Toronto Pan Am Sports Centre (PAC), Toronto, Canada, Sept. 22, 2017. (Pfc. Seara Marcsis/Army)
Marine Lance Cpl. Alan Wetzel, left, assigned to 8th Engineer Support Battalion, and Builder 3rd Class Aurora Morales, assigned to Naval Mobile Construction Battalion 1, show students insect specimens at Escuela Natalia Corriz Viuda de Morales, a Guatemalan primary school, during a Southern Partnership Station 17 community relations project (COMREL). (Mass Communication Specialist 1st Class Jeremy Starr/Navy)
An MH-53E helicopter lifts off from the flight deck of the dock landing ship USS Oak Hill (LSD 51) in the Caribbean Sea as a part relief efforts after Hurricane Maria. (Mass Communication Specialist Seaman Jessica L. Dowell/Navy)
Marines with the 15th Marine Expeditionary Unit Ground Combat Element, Company A, conduct a M240B medium machine gun shoot during Alligator Dagger, Sept. 20, 2017. (Cpl. Timothy Valero/Marine Corps)
Cpl. Angelica Mcfarlin, a heavy equipment operator with Support Company, 7th Engineer Support Battalion, 1st Marine Logistics Group, moves shrubbery during Exercise Deep Strike II at Blythe, California, Sept. 6, 2017. (Lance Cpl. Timothy Shoemake/Marine Corps)
Members of the Mexican air force, navy, army and marine corps form an assembly line to transfer boxes of hygiene and medical supplies from a U.S. Air Force C-17 Globemaster III onto supply trucks Sept. 22 at Ixetepec Airport, Oaxaca, Mexico. (2nd Lt. Sarah Johnson/Air Force)
Volunteers from the 502nd Logistics Readiness Squadron, 74th Aerial Port Squadron, 26th APS and 733rd Training Squadron prepare supplies for transport at Joint base San Antonio-Lackland, Texas, for Hurricane Maria relief efforts Sept. 21, 2017. (Ismael Ortega/Air Force)
