SAN FRANCISCO - MAY 18:  San Francisco mayor Gavin Newsom comments on a drill where trained U.S. Navy seals apprehended suspected terrorist divers during the Golden Guardian statewide port security exercise May 18, 2010 in San Francisco, California. The Golden Guardian Statewide Exercise Series was started by California Governor Arnold Schwarzenegger in 2004 and has become an annual statewide exercise series where law enforcement, emergency services and government agencies coordinate and hold drills to prepare for natural disasters and terrorist attacks. Golden Guardian is the largest statewide exercise program of its kind in the country. Photo: Justin Sullivan, Getty Images
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