Marines take cover behind a blast blanket as detonation cord ignites, blowing a door in and giving the Marines a clear passage to breach a building during an urban breaching course on Camp Lejeune, N.C., March 3, 2015. Marines take cover behind a blast blanket as detonation cord ignites, blowing a door in and giving the Marines a clear passage to breach a building during an urban breaching course on Camp Lejeune, N.C., March 3, 2015. SHARE IMAGE: Download Image: Full Size (2.07 MB) Tags: Photo Essays Photo By: VIRIN: 082044-D-SZW63-746.jpg Photo Gallery