ABC, Ida Mae Astute, Associated Press
FILE - In this undated photo provided by ABC, U.S. Rep. Gabrielle Giffords and husband Mark Kelly are interviewed by Diane Sawyer on ABC's 20/20. One year after being shot in the head, Rep. Gabrielle Giffords is on a mission to return to the job she so clearly loved. Her husband and people near the three-term congresswoman say she is highly motivated to recover from her injuries and get back to work in Washington, potentially using her inspirational story as a way to mend political differences in the nation's capital. She faces a May deadline to get on the November ballot, meaning she has a few months to decide her next step.

TUCSON, Ariz. — U.S. Rep. Gabrielle Giffords is attending a candlelight vigil in Tucson to honor the six people killed one year ago in a deadly supermarket shooting.

A crowd of about 1,000 people cheered as she emerged from backstage and walked up stairs onto the stage.

The remembrance at the University of Arizona capped off a day of events, including a church service that drew hundreds in the afternoon and a citywide bell-ringing at 10:11 a.m., the exact time a gunman started shooting at a Safeway political event.

An orchestra played Sunday evening as more than a thousand people gathered on a cold, palm tree-lined lawn for the vigil.

Giffords was shot in the head severely wounded. She has rarely appeared in public. Her husband, former astronaut Mark Kelly, was expected to speak at the Sunday evening event.