Sonar Technician (Surface) 2nd Class Ben Brown prepares to fire blank rounds from an M4 assault rifle aboard the guided-missile destroyer USS Momsen (DDG 92) at a simulated enemy small boat during the anti-terrorism training exercise Citadel Protect. Citadel Protect is an annual anti-terrorism exercise designed to be hyper-realistic, utilizing pyrotechnics to simulate explosions, blank gunfire, and special-effects makeup to simulate wounds. America's sailors are warfighters, a fast and flexible force deployed worldwide. Join the conversation on social media using #warfighting. (U.S. Navy Photo by Mass Communication Specialist 2nd Class Jeffry Willadsen)