Violent storms leave trail of damage in Eastern U.S.

Damaged exhibit for the Smithsonian Folklife Festival litter the National Mall near the Washington Monument, background, in Washington Saturday, June 30, 2012 after a powerful storm swept across the Washington region late Friday.   (AP Photo/Manuel Balce Ceneta) <span class=meta>(AP Photo/ Manuel Balce Ceneta)</span>
June 30, 2012 6:07:58 PM PDT