170720-N-BN978-065 GREAT LAKES, Ill. (June 20, 2017) A student testing to be qualified as a 2nd Class Swimmer utilizes her breast stroke at Naval Station Great Lakes Moral, Welfare and Recreation swim pool Jun. 20. The testing is part of the curriculum for Boatswain's Mate and Seaman Professional Apprenticeship Career Track accession sailors. It is also offered to all students at Training Support Center Great Lakes (TSC) and staff at TSC, Center for Surface Combat Systems Unit Great Lakes, and Surface Warfare Officer School Unit Great Lakes. (U.S. Navy photo by Brian Walsh/ Released)