In this photo shot by a pool photographer and later vetted and approved for release by the Green family, Mark Kelly, husband of Rep. Gabrielle Giffords, attends the funeral mass for Christina Green, the youngest victim of a shooting spree last Saturday that claimed six lives and left his wife battling for her life, in Tucson Ariz. Thursday, Jan. 13, 2011. (AP Photo/Rick Wilking, Pool)
January 19, 2011 5:36:35 PM PST
By SUSAN MONTOYA BRYAN, Associated Press
TUCSON, Ariz. - January 19, 2011 --
Rep. Gabrielle Giffords has reached another important milestone in her recovery: She is now able to stand up.