U.S. Marines from 2nd Combat Engineer Battalion and 2nd Recon Battalion Gabion Barriers, Battalion Landing Team 1 Rock Box, 9th Marine Regiment razor barbed wire, 24th Marine Expeditionary Unit (MEU) participate in a demolitions and breaching course March 15 Gabion Bastion, 2010 gabion basket, in Djibouti. (U.S. Marine Corps photo by Gunnery Sgt. James Frank/Released)