Keywords: Flickr - Official U.S. Navy Imagery - A Sailor is checked at the decontamination chamber during the 2012 Solid Curtain and Citadel Shield exercise..jpg MAYPORT Fla March 20 2012 Seaman Raymond Kong assigned to Naval Station Mayport is checked at the decontamination chamber during the 2012 Solid Curtain and Citadel Shield exercise at Naval Station Mayport Solid Curtain and Citadel Shield is a week-long security exercise and is the largest anti-terrorism and force protection exercise conducted by Navy installations and activities in the continental United States U S Navy photo by Mass Communication Specialist 2nd Class Jacob Sippel/Released 120320-N-AW702-026 http //www flickr com/photos/usnavy/7017605071/ A Sailor is checked at the decontamination chamber during the 2012 Solid Curtain and Citadel Shield exercise 2012-03-20 15 22 http //www flickr com/people/56594044 N06 Official Navy Page from United States of America MC2 Jacob Sippel/U S Navy U S Navy photo PD-USGov-Military-Navy Official U S Navy Imagery http //flickr com/photos/56594044 N06/7017605071 2012-11-13 22 06 31 cc-by-2 0 Images from United States Navy to check Scott Safety Promask |