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In this photo taken on Sunday, Sept. 20, 2015, Pope Francis is greeted by faithful as he enters the San Cristobal Cathedral, Havana, Cuba. Francis presided over the evening prayer service in Havana's 18th century cathedral, where he broke from prepared remarks and spoke off-the-cuff at length for the first time during his trip to Cuba. (L'Osservatore Romano/Pool Photo via AP)
In this photo taken on Sunday, Sept. 20, 2015, Pope Francis is greeted by faithful as he enters the San Cristobal Cathedral, Havana, Cuba. Francis presided over the evening prayer service in Havana's 18th century cathedral, where he broke from prepared remarks and spoke off-the-cuff at length for the first time during his trip to Cuba. (L'Osservatore Romano/Pool Photo via AP)

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With the Pope in town, how safe are you?

NYPD Commissioner Bill Bratton tells Anderson Cooper about all the security precautions in place for Pope Francis.