Recruits with Hotel Company, 2nd Recruit Training Battalion, crawl during a combat conditioning exercise at Marine Corps Recruit Depot San Diego on Nov. 14, 2018. (Marine Corps)
Paratroopers from Company A, 307th Airborne Engineer Battalion, 3rd Brigade Combat Team, 82nd Airborne Division observe as a door-breaching charge they emplaced detonates Nov. 6, 2018, on Fort Bragg, N.C. (Army)
U.S. Air Force Senior Airman Jamar Jackson, a United States Air Force Honor Guard ceremonial guardsman, marches in the Veterans Day Parade in New York on Nov. 11, 2018. The Honor Guard performed in the parade to honor veterans and to inspire, recruit and retain future airmen. (Airman 1st Class Michael S. Murphy/Air Force)
An MH-60R Sea Hawk helicopter takes off from the flight deck of the Ticonderoga-class guided-missile cruiser USS Chancellorsville (CG 62) on Nov. 14, 2018, during flight quarters in the Philippine Sea. (MC2 Sarah Myers/Navy)
German soldiers board a U.S. Marine Corps CH-53E Super Stallion helicopter during cold-weather training in support of Exercise Trident Juncture 18 in Dalsbygda, Norway, Nov. 1, 2018. (Cpl. David Delgadillo/Marine Corps)
A nuclear advanced designated marksman from the 341st Security Support Squadron Tactical Response Force assists in a launch facility recapture exercise from a distance in support of Global Thunder 19 on Oct. 30, 2018, at Malmstrom Air Force Base, Mont. (Beau Wade/Air Force)
A U.S. Army combat medic assigned to the 82nd Airborne Division, Fort Bragg, N.C., readies his equipment Nov. 6, 2018, before embarking on his final evaluation lane while competing for the Expert Field Medical Badge. (Sgt. Dustin Biven/Army)
A U.S. Air Force F-15E Strike Eagle receives in-flight fuel from a KC-135 Stratotanker on Oct. 25, 2018, while flying over Iraq in support of Operation Inherent Resolve. (Staff Sgt. Clayton Cupit/Air Force)
U.S. Army Sgt. Mauricio Caceres and Sgt. Cory Sweetman descend from an aircraft during an exercise at Atlantic City International Airport, N.J., Nov. 7, 2018. Caceres and Sweetman are with the 21st Weapons of Mass Destruction-Civil Support Team (21st WMD-CST), New Jersey National Guard. (Master Sgt. Matt Hecht/Air National Guard)
The Nimitz-class aircraft carrier USS John C. Stennis (CVN 74) transits the Pacific Ocean on Nov. 9, 2018. (MC3 Connor D. Loessin/Navy)