Office workers gather on the sidewalk in downtown Washington, Tuesday, Aug. 23, 2011, moments after a 5.9 magnitude tremor shook the nation's capitol. The earthquake centered northwest of Richmond, ... more 
Office workers gather on the sidewalk in downtown Washington, Tuesday, Aug. 23, 2011, moments after a 5.9 magnitude tremor shook the nation's capitol. The earthquake centered northwest of Richmond, Va., shook much of Washington, D.C., and was felt as far north as Rhode Island and New York City. (AP Photo/J. Scott Applewhite) less 
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Associated Press | Photo By J. Scott Applewhite
Tue, Aug 23, 2011 2:28 PM EDT