Image 0 of 4Soldiers fire an M252A1 81mm mortar system at a firing range at night in Grafenwoehr, Germany, Oct. 20, 2017. The soldiers are paratroopers assigned to Headquarters Company, 2nd Battalion, 503rd Infantry Regiment (Airborne). (Staff Sgt. Alexander C. Henninger/Army) U.S. Marines and Master Labor Contractors with the Logistics Department Fuels Division observe the Aircraft Direct Fueling System (ADFS) during the first hot refuel utilizing the new system at Marine Corps Air Station Iwakuni, Japan. The ADFS allows the aircraft to rotate crew, take on cargo or Marines and keep its engines running while accepting fuel. (Cpl. Donato Maffin/Marine Corps) Sgt. 1st Class Anderson Jimenez, a combat engineer with the 815th Brigade Engineer Battalion, 1st Security Force Assistance Brigade, fires an M4 rifle during a stress shoot at Fort Benning, Georgia. (Staff Sgt. Sierra A. Melendez, 50th Public Affairs Detachment, 3rd Infantry Division/Army) Aviation Boatswain's Mate (Handling) Seaman Noel Kulloda, assigned to the amphibious assault ship USS Wasp (LHD-1), signals the pilot of a CH-53E Super Stallion helicopter attached to Marine Heavy Helicopter Squadron (HMH) 361, Marine Aircraft Group 16, 3rd Marine Aircraft Wing, during deck landing qualifications aboard the USS Essex (LHD-2) as a part of Exercise Dawn Blitz, Oct. 21, 2017. (Lance Cpl. Roderick Jacquote/Marine Corps)