Keywords: US Navy 050403-N-6278B-001 A Close-In Weapon System (CIWS) fires during a Pre-Aim Calibration (PAC) fire aboard the Nimitz-class aircraft carrier USS Theodore Roosevelt (CVN 71).jpg en Atlantic Ocean Apr 3 2005 - A Close-In Weapon System CIWS fires during a Pre-Aim Calibration PAC fire aboard the Nimitz-class aircraft carrier USS Theodore Roosevelt CVN 71 CIWS is the self-defense system that combines a 20mm Gatling gun with search and tracking radar to provide surface ships with terminal defense against anti-ship missiles Roosevelt is currently underway for Tailored Ship Training Availability and Final Evaluation Problem TSTA/FEP in the Atlantic Ocean U S Navy photo by Photographer's Mate 2nd Class Reginald Buggs RELEASED 2005-04-03 050403-N-6278B-001 Navy http //www navy mil/view_image asp id 23324 U S Navy photo by Photographer's Mate 2nd Class Reginald Buggs PD-USGov-Military-Navy Aboard USS Theodore Roosevelt CVN-71 Phalanx CIWS firing |