Obama: 'We're Not Going Anywhere'
President Obama speaks at a memorial service to remember the victims of the Joplin, Mo., tornado, telling residents America is 'not going anywhere' until the devastated town gets back on its feet.Death Toll From Tornado at Least 139 VIDEO: Heroic Mother, Daughter Survive Tornado 
PHOTOS: Tornadoes Ravage Heartland Cities 
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