190910-N-BN978-5095 GREAT LAKES, Ill. (Sept. 10, 2019) Operations Specialist 2nd Class Eric Estes, an instructor at Center for Surface Combat Systems Unit Great Lakes, center, discusses the modernized training that occurs at the Operations Specialist "A" School Voyage Management System lab during the Naval Education and Training Command Fall 2019 Force Development Offsite, Sept. 10, 2019. (U.S. Navy photo by Brian Walsh/Released)