Today on Cronkite NewsWatch we bring you live coverage of President Barack Obama's visit to Arizona, and the reaction to his third State of the Union address from Arizona's congressional leaders. Also, we were in Washington, D.C. as Gabrielle Giffords stepped down from her seat in the U.S. House of Representatives. And Cronkite News reporter Nathan O'Neal takes an in-depth look at the rising incidence of HIV on the Navajo Reservation.

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