180927-N-BN978-020 GREAT LAKES, Ill. (September 27, 2018) Chief Fire Controlman (Aegis) John Keller, assigned to the Center for Surface Combat Systems Unit Great Lakes, gives a presentation to Rear Adm. Kyle Cozad, commander of Naval Education and Training Command, Sept. 27, 2018. (U.S. Navy photo by Brian Walsh/Released)