Harold Preston, who gave more than 40 years of his life to the Houston Police Department, was shot and killed in the line of duty. He is now facing several charges, including capital murder against a peace officer, attempted capital murder against a peace officer and aggravated assault. Manzano’s wife, Santos Mejia, says Preston and officer Courtney Waller saved her life. She says if it wasn’t for the officers she and her 14-year-old son would not be alive. She made it very clear that if it wasn’t for Sgt.