ATLANTIC OCEAN (June 5, 2021) Religious Program Specialist 1st Class Brandon Peterkin, assigned to the San Antonio-class amphibious transport dock ship USS Arlington (LPD 24), leads a security response force team through the mess decks during an active shooter training event, June 5, 2021. Arlington is conducting an integrated training event known as �The Final Battle Problem,� in which every warfare area of the ship is tested in real world, tactical scenarios. (U.S. Navy photo by Mass Communication Specialist 2nd Class John D. Bellino)