On the morning of January 8, 2011, Gabriel Gabe Zimmerman, 30, was staffing a Congress on Your Corner event in the Safeway parking lot in Casas Adobes, near Tucson. The outreach event drew about 20 to 30 people. At roughly 10:10 a.m., Jared Lee Loughner approached Representative Gabby Giffords and shot her at point-blank range, then opened fire into the crowd. Zimmerman was fatally wounded and was one of six people killed; 13 others were wounded, including Giffords. Zimmerman is reported to be the first congressional staffer killed in the line of duty.

Bystanders tackled Loughner at the scene and he was taken into custody. Authorities later documented a history of erratic behavior and a fixation on Giffords. Federal charges included the attempted assassination of a member of Congress and the murder of a federal employee that named Zimmerman. Initial findings of incompetence led to psychiatric treatment; Loughner later pleaded guilty to federal counts in August 2012 and was sentenced in November 2012. Pima County prosecutors declined to pursue separate state charges.

Are there details about Zimmerman’s work or the people who knew him that might help preserve his memory?