Official websites use .mil
Secure .mil websites use HTTPS
200624-N-BN978-5076 GREAT LAKES, Ill. (June 24, 2020) Engineering Control System (ECS) C School students at Surface Warfare Engineering School Command (SWESC), Great Lakes work on ECS simulated courseware to gain the practical skills necessary to support performance of tasks required on amphibious transport dock ships. (U.S. Navy photo by Brian Walsh/Released)