170720-N-BN978-014 GREAT LAKES, Ill. (June 20, 2017) A student testing for the Second Class Swimmer qualification steps off a five-foot platform at Naval Station Great Lakes Moral, Welfare and Recreation swim pool. The testing is part of the curriculum for Boatswain's Mate and Seaman Professional Apprenticeship Career Track accession sailors. (U.S. Navy photo by Brian Walsh/Released)