190614-N-RD699-1036 DIEGO GARCIA (June 14, 2019) Seabees assigned to Naval Mobile Construction Battalion (NMCB) 4 use laser level to ensure concrete forms are sitting at the right elevation. Pacific Air Force will use these pads to store materials and equipment. NMCB-4 is one of the forward deployed pacific NMCBs ready to support major combat operations, humanitarian assistance and disaster relieve and to provide general engineering and civil support to U.S. and joint operational forces. (U.S. Navy photo by Builder 3rd Class Emma R. Soflin/Released)