Opposition fighters flashed the V-sign for victory during celebrations in Tripoli's newly named Martyrs Square, formerly known as Green Square, on Tuesday (Aug. 23, 2011). Filippo Monteforte/AFP/Getty Images hide caption

itoggle caption Filippo Monteforte/AFP/Getty Images

Office workers gather on the sidewalk in downtown Washington, Tuesday, moments after a 5.8 magnitude tremor shook the nation's capital. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

People reach for their cellphones outside the courthouse in Manhattan after an earthquake rattled the East Coast on Tuesday. Nicholas Kamm /AFP/Getty Images hide caption

itoggle caption Nicholas Kamm /AFP/Getty Images