A U.S. Marine holds two M781 cartridge 40 mm practice rounds and two M433 high-explosive dual-purpose rounds. The U.S. has sent more than 1 million 40 mm rounds consisting of both the higher penetrating high-velocity M430A1 HEDP and the low- velocity M433 HEDP to Ukraine. (Photo by Lance Cpl. Colby J. Cooper, Combat Camera, Marine Corps Installations Pacific)