Editor's note: A gunman killed 10 people and himself Tuesday in southern Alabama. It's the most recent example of mass killing sprees that have traumatized communities over the years. Here's how one city responded.
On October 16, 1991, 35-year-old George Hennard drove a pickup truck into Luby's cafeteria in Killeen, Texas, and fatally shot 23 people and wounded more than 20 before killing himself.
For more than 15 years, the city next to the sprawling Fort Hood military base had the dubious distinction of being the site of the deadliest mass shooting in the United States - until a student killed 32 people and himself at Virginia Tech in 2007.
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