Like I said, you have to be some kind of lawyer to properly use a gun in the USA these days. Three men robbed a store and this pharmacist was shot at and he carried a pistol and shot back at them and killed one and now he's being charged with murder.
http://www.examiner.com/x-5919-Norfolk-Crime-Examiner~y2009m5d24-Oklahoma-pharmacist-kills-armed-robber-saves-the-lives-of-his-staff
http://www.examiner.com/x-5919-Norfolk-Crime-Examiner~y2009m5d24-Oklahoma-pharmacist-kills-armed-robber-saves-the-lives-of-his-staff