An American flag is shown in front of the Golden Gate Bridge in San Francisco, Tuesday, June 7, 2011. As millions flock to summer vacations at national landmarks _ particularly those that are embedded... more 
An American flag is shown in front of the Golden Gate Bridge in San Francisco, Tuesday, June 7, 2011. As millions flock to summer vacations at national landmarks _ particularly those that are embedded in our culture as symbols of freedom and the American spirit _ the level of post-Sept. 11 security often depends on the symbolism. (AP Photo/Jeff Chiu) less 
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Associated Press | Photo By Jeff Chiu
Thu, Jun 9, 2011 11:25 PM EDT