Marines from 2nd Platoon, Bravo Company, 3rd Combat Engineer Battalion, shovel dirt from a multi-purpose bucket loader into a gabion to fortify an elevated post during the opening phase of Operation Double Check, a battalion-level offensive to rid Mosulmani and other areas of southern Musa Qal’eh district of insurgents. Second Platoon is working in direct support of 2nd Battalion, 4th Marine Regiment, during the operation.