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    U.S. braces for Irma, a Category 5 hurricane

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U.S. braces for Irma, a Category 5 hurricane

Hurricane Irma gains strength, takes aim at the Caribbean and has an uncertain track for Florida. CNN meteorologist Tom Sater reports.

U.S. braces for Irma, a Category 5 hurricane

Hurricane Irma gains strength, takes aim at the Caribbean and has an uncertain track for Florida. CNN meteorologist Tom Sater reports.