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erin boston marathon bombing eyewitness _00022810.jpg
erin boston marathon bombing eyewitness _00022810.jpg

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    Witness: 'Blood everywhere' in Boston

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Witness: 'Blood everywhere' in Boston

Cassidy Quinn Brettler was near the Boston Marathon bombing and talks to CNN's Erin Burnett about what she saw.

Witness: 'Blood everywhere' in Boston

Cassidy Quinn Brettler was near the Boston Marathon bombing and talks to CNN's Erin Burnett about what she saw.