NORFOLK (Nov. 12, 2020) Sailors, assigned to the amphibious transport dock ship USS Arlington (LPD 24), conduct mass casualty drills with Sailors, assigned to Walter Reed National Military Medical Center, aboard Arlington, Nov. 12, 2020. Arlington is the first amphibious transport dock ship to conduct mass casualty drills as a Casualty Receiving Treatment Ship. A CRTS is a Navy Medicine platform comprised of additional medical personnel and equipment designated to augment an expeditionary strike group ship to boost warfighter survivability during a mass casualty. (U.S. Navy photo by Mass Communication Specialist 2nd Class John D. Bellino)