A grand jury will decide whether an armed taqueria customer, who shot and killed a robber last week in southwest Houston and is now being hailed a hero, will be criminally charged. Investigators said the 46-year-old customer, who police have not identified because he's not under arrest, turned himself in and is cooperating with detectives. The 46-year-old's attorney sent Eyewitness News the following statement: "My client, who wishes to remain anonymous, was dining with a friend at El Ranchito Taqueria and as it has been seen on video, a robbery suspect entered the restaurant, and pointed a weapon at my...