| The United Nations building on Manhattan's East Side is evacuated as a precautionary measure. |
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REAL VIDEO 
11:51 A.M. |
| On the NY1 news set, a professional photographer describes being trapped in the collapse. |
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REAL VIDEO
12:06 P.M. |
| The president addresses the nation, saying, "We will do whatever it takes to secure America and Americans." |
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REAL VIDEO
1:09 P.M. |