Marines, with 2nd Combat Engineering Battalion, 2nd Marine Division, brace in line behind a blast blanket while a charge is set off. The blanket serves as a shield between flying debris and Marines who were standing just feet away from the door after placing explosives on it. Instructors at Engineer Training Area 3 and Marines worked together, January 10, so Marines could learn basic urban breaching skills for their scheduled deployment to Afghanistan. The main focus for Marines after getting down all the basics was learning how to use what’s around them for explosive charges, said Cpl. Rollie Lemons, of Austin, Texas, sapper instructor with 2nd CEB. - Marines, with 2nd Combat Engineering Battalion, 2nd Marine Division, brace in line behind a blast blanket while a charge is set off. The blanket serves as a shield between flying debris and Marines who were standing just feet away from the door after placing explosives on it. Instructors at Engineer Training Area 3 and Marines worked together, January 10, so Marines could learn basic urban breaching skills for their scheduled deployment to Afghanistan. The main focus for Marines after getting down all the basics was learning how to use what’s around them for explosive charges, said Cpl. Rollie Lemons, of Austin, Texas, sapper instructor with 2nd CEB.