Bells will toll in Tucson, Arizona today -- marking the time two years ago when Jared Lee Loughner opened fire at a supermarket where congresswoman Gabrielle Giffords was meeting with constituents.
Six people died, and Giffords was critically injured.
Giffords and her husband, Mark Kelly, today are unveiling an initiative aimed at raising money to support gun control efforts.
Giffords and Kelly met Friday with the families of victims in last month's shooting in Connecticut.
Kelly says the meeting brought back a lot of memories. He tells ABC: "You hope that this kind of thing doesn't happen again. And you know what? It does happen again." (AP)