GULF OF ADEN (Feb. 15, 2011) The Arleigh Burke-class guided-missile destroyer USS Barry (DDG 52) conducts an operational check of the countermeasure wash down sprinkler system. The countermeasure wash down system washes the ships exterior in case of chemical, biological or radiological contamination. Barry is on a routine deployment conducting maritime security operations in the U.S. 5th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Jonathan Sunderman)