TX: Man Retreats to Apt, Shoots Assailant

Police said the victim was with several other people when he got into an argument with another man in the group who lived at the complex. When the argument escalated into a fight, the resident went into his apartment. The other man followed him and apparently tried to assault him either at the doorway or inside the unit. That's when, police said, the resident grabbed a gun and shot the man.

More Here