U.S. Marine Corps Lance Cpl. Bradley Washington, with Company Echo, 1st Battalion, 12th Marine Regiment, fires a 155 mm white phosphorous round from a M777 lightweight howitzer during Rim of the Pacific (RIMPAC) exercise at Pohakuloa Training Area, Hawaii, July 21, 2012.
RIMPAC is a U.S. Pacific Command-hosted biennial multinational maritime exercise designed to foster and sustain international cooperation on the security on the world’s oceans. (Photo by U.S. Air Force Tech. Sgt. Michael R. Holzworth). Original public domain image from Flickr