BREACHING BLAST Marines line up for a door-breaching exercise using a donut charge during Operation Lava Viper at Pohakuloa Training Area, Hawaii, May 28, 2015. The Marines are combat engineers assigned to Charlie Company, 1st Battalion, 3rd Marine Regiment. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 095538-E-LDC98-614.jpg Photo Gallery