CBS News correspondent Dean Reynolds reports victims Dorothy Morris and Phyllis Scheck were both in their 70s, though in the chaotic aftermath of the shooting, we know little about them.
We have had a chance to learn more about Gabe Zimmerman, a 30-year-old communications staffer for Congresswoman Giffords.
C.J. Karamargin, Giffords' communications director, said Zimmerman "knew the congresswoman's positions, but like the congresswoman, he was a people person. So here was this 30-year-old guy who was wise beyond his years and dedicated and loyal and determined, and he was there to help people."
At the Mountain Avenue Church of Christ in Tucson, the congregation mourned the loss of Dorwin Stoddard, the much-loved 76-year-old maintenance man who recently built this room in the sanctuary for children. He died Saturday in the arms of his wife, Mavy, who was also wounded in the melee.
"When he dove down to take her out of the way he fell on her," said Rev. Mike Nowak, the church's pastor. "He died about seven minutes after he was shot, and she was talking to him and trying to console him, and she knew he was dead before they took her to the hospital."
Another victim was Federal Judge John Roll, who went to church on Saturday as he always did and then fatefully headed over to see his friend, the congresswoman.
"He was a wise and compassionate jurist," said Rick Weare, a clerk for Roll. "He was one of those people you meet in your life who didn't have an enemy."