Giffords waves to crowd at vigil in Tucson, Arizona.

Congresswoman Gabrielle Giffords (L) waves to the crowd at a vigil honoring the victims and survivors of the shootings one year a year ago in Tucson, Arizona, January 8, 2011. The vigil was held on the University of Arizona Mall. Watching Giffords is her husband Mark Kelly (R). UPI/Art Foxall