Former Arizona congresswoman Gabby Giffords went sky-diving Wednesday to mark three years since a gunman gravely wounded her in a Tucson parking lot, in a shooting that left six people dead and 12 others wounded. Giffords had loved to sky-dive but hadn't done it since she was shot three years ago. The "Today" show's Savannah Guthrie — as well as Giffords' mother and husband Mark Kelly — accompanied her for the triumphant jump, and Guthrie tweeted afterward that the former lawmaker had stuck her landing and shared a photo of her mid-air. Giffords' jump will air on NBC's "Today" show Thursday. Since being shot in the head three years ago, Giffords has undertaken an arduous recovery. She stepped down from Congress in 2012, and since then, she and Kelly have become advocates for stricter gun laws.