191030-N-IO284-1361 NORFOLK (Oct. 30, 2019) Sailors assigned to the amphibious transport dock ship USS Tortuga (LSD 46) perform a mass casualty exercise during a fire drill involving ship’s force and the Norfolk Fire Department at BAE Systems Norfolk Ship Repair. Tortuga is conducting a Modernization Period (MODPRD) at BAE. Mid-Atlantic Regional Maintenance Center (MARMC) is providing management and oversight of the MODPRD. (U.S. Navy photo by Derry Todd/Released)