Moore, Okla., police chief Jerry Stillings speaks to Norah O'Donnell about the devastated Plaza Towers Elementary School, how residents are coping in the aftermath, and how yesterday's tornado ... more 
Moore, Okla., police chief Jerry Stillings speaks to Norah O'Donnell about the devastated Plaza Towers Elementary School, how residents are coping in the aftermath, and how yesterday's tornado compares to the historic 1999 tornado. less 
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Tue, May 21, 2013 2:18 PM EDT