This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Official U.S. Navy Imagery Seabee fires MK grenade launcher during training.. BARBATE Spain April Builder rd Class Katherine Gardour assigned to Bravo Company of Naval Mobile Construction Battalion NMCB fires mm rounds from MK automatic grenade launcher at the Sierra del Retin weapons range Navy photo by Mass Communication