David Nakamura, Dana Hedgpeth and Sari Horwitz
Washington Post 
Jan 19, 2011
TUCSON – Authorities have analyzed nearly two dozen surveillance videos in the massive investigation of accused Tucson killer Jared Lee Loughner, some of which clearly show a gunman shooting federal Judge John Roll in the back as he and an injured congressional aide try to scramble under a table, officials who have viewed the footage said Tuesday.
It also shows the gunman walking toward Rep. Gabrielle Giffords (D-Ariz.) and firing his first bullet into her face from two to three feet away, the officials said; he then blasts 31 more shots in a span of no more than 15 seconds. Doctors initially said the bullet entered Giffords’s head from the back, but they have since said it struck her above the left eye, and the footage leaves little doubt of that.
The videos, taken by cameras stationed inside and outside a Safeway where six died in the Jan. 8 rampage ¿ offer the most detailed picture yet of the mayhem that left Giffords gravely wounded and 12 others injured. The images, which have not previously been described in detail, offer glimpses of Loughner inside the store, where investigators believe he made final preparations for the shootings. They also show him walking toward the area outside where Giffords was staging a constituent event, said Richard Kastigar, chief of operations and investigations for the Pima County Sheriff’s Department.
Kastigar’s account was confirmed by a second law enforcement official who spoke on the condition of anonymity because of the ongoing criminal probe.