HOUSTON – A former Fort Bend County sheriff’s deputy has been charged with criminal negligent homicide in the shooting death of a 37-year-old deputy constable in the Sienna Plantation area of Missouri City in May. Chadwick Devin McRae, 49, of Stafford, is charged in the death of Caleb Rule, records show. The Fort Bend County Sheriff’s Office released a statement about McRae, saying he was terminated following an internal investigation due to violation of the office’s Use of Force Policy as it related to Rule’s death. “This situation is tragic,” Fort Bend County District Attorney Brian M. Middleton said. And the death of Deputy Rule, who was on duty serving his community at the time of his death, is an unbearable loss for his wife, children, and extended family.”The Fort Bend County Sheriff’s Office referred questions to the Texas Rangers, as the lead investigative agency, and the Fort Bend County District Attorney’s Office.