Pfc. Vincent L. Calli, student in an Assultman Course with Infantry Training Battalion, School of Infantry East, prepare a timber charge during a demolition and explosive training exercise at the ETA-7 engineer demolition training range on Marine Corps Base Camp Lejeune, , Jan. 11, 2018. This exercise was held to demonstrate different demolition and explosive breaching training to develop proficiency in mobility support to infantry units. ( Marine Corps

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