180625-N-GG458-027 ATLANTIC OCEAN (June 25, 2018) Lt. Emily Frost, an anti-submarine warfare/surface tactics instructor from Naval Surface and Mine Warfighting Development Center (SMWDC), briefs Sailors assigned to the San Antonio-class amphibious transport dock ship USS Arlington (LPD 24) prior to advanced training events. (U.S. Navy photo by Mass Communication Specialist 1st Class Stevie Tate/Released)