The Oklahoma reserve sheriff's deputy who shot a man dead, after he says he mistakenly grabbed for his gun instead of his Taser, told the "Today" show Friday that he had no desire to take a life. Robert Bates, who is charged with second-degree manslaughter in the shooting death of a man suspected of trying to sell a gun to an undercover cop, told Matt Lauer the shooting was "number one on my list of things in my life that I regret." In video of the encounter, Bates can be heard yelling, "Taser! Taser!" and then saying, "I shot him! I'm sorry!" The thought that crossed his mind just after he realized what he had done, he said: "Oh, my God, what has happened?" Bates said that while he keeps the Taser and gun in different spots on his body, the laser light on each is the same. "This was not an intentional thing," he said.