DAHLGREN, Va. (April 26, 2017) - U.S. Naval Academy Midshipmen and their instructors are pictured during their tour of the gun line at the Potomac River Test Range where naval guns have been tested since 1918. Throughout their Naval Surface Warfare Center Dahlgren Division (NSWCDD) visit, the future officers were briefed on technologies related to their course of study at the U.S. Naval Academy Weapons and Systems Engineering Department. Navy civilian scientists and engineers briefed the Midshipmen on electromagnetic launchers, hypervelocity projectiles, and directed energy weapons, in addition to the command's capabilities in complex warfare systems development and integration to incorporate electric weapons technology into existing and future fighting forces and platforms. This marks the Naval Academy's 17th tour of NSWCDD since 2009. Over the past 10 years, 572 Midshipmen toured Dahlgren - including the 30 Midshipmen who toured the command today - for briefings relative to their courses of study. In all, three Naval Academy instructors accompanied the Midshipmen, on this tour. Behind the Midshipmen are, left to right, a retired eight-inch triple mount automatic gun mount; a 76mm/62caliber super rapid gun mount; a retired eight-inch/55 major caliber automatic gun mount; a retired five-inch Mark 42/10 mount; and the five-inch/54 caliber automatic gun mount with the test gun barrel removed for inspection. (U.S. Navy photo/Released)