190914-N-JA639-1002 SAN CLEMENTE ISLAND, Calif. (Sept. 14, 2019) Equipment Operator 3rd Class Levi T. Longley, assigned to Naval Mobile Construction Battalion (NMCB) 4, drills holes with a rock drill in preparation for a quarry blast. NMCB 4 is forward-deployed throughout the Indo-Pacific region ready to support major combat operations, humanitarian assistance and disaster relief and to provide general engineering and civil support to U.S. and joint forces. (U.S. Navy photo by Equipment Operator 3rd Class Itzel Contreras/Released)