180227-N-YN937-103 FORT EUSTIS, Va. (Feb. 27, 2018) – Gunner’s Mate 1st Class Joshua Fredericks, left, and Master-at-Arms 2nd Class Zachary Marley, both assigned to Coastal Riverine Group (CORIVGRU) 2, participate in a training scenario during an Embarked Security Combat Skills course. Embarked security teams provide force protection to noncombatant Military Sealift Command vessels and contracted ships around the world. (U.S. Navy photo by Mass Communication Specialist 3rd Class Alan Lewis/Released)