180222-N-PO203-063 DAHLGREN, Va. (Feb. 22, 2018) Electromagnetic Railgun (EMRG) lead systems engineer, Chester Petry, provides an overview of current railgun technology at Naval Surface Warfare Center, Dahlgren Division, where retired Adm. James Hogg and Dr. Hans Mark were honored during a EMRG line naming ceremony. As public servants, Hogg and Mark laid the foundation for the U.S. Navy Railgun program and led the effort to explore and illustrate to senior leadership the warfighting advantages of this game-changing technology and were pivotal in gaining the initial funding necessary to demonstrate its feasibility. (U.S. Navy photo by John F. Williams/Released)