Railgun (IMAGE) Office of Naval Research Caption Gary Bass, from the Naval Surface Warfare Center in Dahlgren, Va., uses a crane to maneuver a 32-MJ version of the Office of Naval Research-funded Electromagnetic Railgun prototype into place for government evaluation. The EMRG is a long-range weapon that launches projectiles using electricity instead of chemical propellants and is under development by the Department of the Navy for use aboard ships. Credit US Navy photo by John F. Williams/Released Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.