U.S. Marine Corps Lance Cpl. Dylan Sheperd, an assistant gunner, loads a round into an M224 60mm mortar system during a live… https://www.rawpixel.com/image/3317872/free-photo-image-3rd-battalion-60mm-mortar-6th-marine-regimentFree Image from public domain licenseU.S. Marine Corps mortarmen with Battalion Landing Team, 1st Battalion, 2nd Marine Regiment, 22nd Marine Expeditionary Unit… https://www.rawpixel.com/image/8727830/photo-image-fire-public-domain-personFree Image from public domain license