Service members, Department of Defense civilians, and members of the House Armed Services Committee watch a demonstration of the Active Denial System at Fort Eustis, Va., Sept. 12, 2013. The ADS can be used (in a maritime environment) to prevent vessels from entering a port, allowing Service members to engage threats at a longer range with non-lethal capabilities. (U.S. Air Force photo by Staff Sgt. Wesley Farnsworth/Released)