U.S. Marine Corps Cpl. Corey Slayman, a combat engineer with the Littoral Engineer Reconnaissance Team, 9th Engineer Support Battalion, 3rd Marine Logistics Group, posts security for a reconnaissance patrol during exercise Poseidon’s Watchtower on Ukibaru Island, Okinawa, Japan, June 8, 2021. Marines with 3d Marine Logistics Group and Sailors with Naval Mobile Construction Battalion 4 and UCT-2 conducted a reconnaissance of the island to hone their skills in assessing terrain for suitability of supporting maritime operations. NMCB-4 is forward deployed throughout the Indo-Pacific region and United States, ready to support major combat operations, theater security, humanitarian assistance and disaster relief operations. UCT-2 provides a capability to support a Fleet Marine Force amphibious assault, subsequent combat service support ashore, and construction, inspection, repair and maintenance of ocean facilities in support of Navy and Marine Corps operations.