Gabrielle Giffords pays tribute

U.S. Rep. Gabrielle Giffords, center, with her husband, Mark Kelly, and Nancy Barber, wife of Giffords' district director, Ron Barber, pause Saturday at a trailhead overlooking Tucson that was named in memory of Gabe Zimmerman, who died in the Jan. 8, 2011, shooting that wounded Giffords. Zimmerman was director of community outreach for Giffords.