U.S. marathon security: How will it change?

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U.S. marathon security: How will it change?

U.S. marathon security: How will it change?
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U.S. marathon security: How will it change?

CBSTV Videos 2:57 mins

Jean Knaack, the Executive Director of the Road Runners Club of America, talks to "CBS This Morning: Saturday" about how race organizers plan to keep runners and spectators safe.

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