John McCarthy Roll was a 63-year-old federal judge who attended a Congress on Your Corner event hosted by Representative Gabby Giffords at a Safeway supermarket in Casas Adobes near Tucson, Arizona on the morning of January 8, 2011. He had attended Mass earlier that day and went to the event to continue a conversation with the congresswoman about the heavy caseload in Arizona’s federal courts.

During the event a gunman opened fire on the crowd. Surveillance footage and other reports indicate Judge Roll was struck by a single gunshot to his back while he pushed down and shielded Ron Barber, a Giffords staffer who had also been shot. Judge Roll and five other people died at the scene. The shooter was subdued by bystanders and was later charged in federal court for the murder of Judge Roll on the grounds that the killing occurred in an attack on a federal official.

Did anyone at the event or in Casas Adobes see Judge Roll that morning or have information about his last movements?