Howitzer Load U.S. Marines load an M777 howitzer at a live-fire range at Adazi Training Area in Latvia during exercise Dynamic Front 19, March 1, 2019. SHARE IMAGE: Download Image: Small (573.44 KB)| Medium (1730.56 KB)| Full Size (3.5 MB) Photo By: Marine Corps Cpl. Niles Lee VIRIN: 190301-M-HG783-1517.JPG Photo Gallery