Seeking help following an assault at the hands of her boyfriend, a woman phoned her parents. They quickly picked her up and brought her to their home, calmed their terrified daughter and she went to sleep. Then a banging at the door arose—the boyfriend had found her hiding place. The parents would not answer, so the suspect kicked in the door and began assaulting them. The mother was able to struggle free and ran to the bedroom to get her pistol. Meanwhile, the suspect turned his attention to the father. The mother returned to find the suspect badly beating her husband. She opened fire, killing 
the suspect. (The Orange Leader, Orange, TX, 05/16/11)

The Armed Citizen Extra
(The following account did not appear in the print version of American Rifleman.)

A 40-year-old man was asleep in his mobile home when he heard loud music and screeching tires outside. Within moments, two men forced their way into the mobile home, and shoved the homeowner to the ground. The homeowner ran to his bedroom, shut the door and grabbed a semi-automatic pistol. When the intruders forced their way into the bedroom, the homeowner fired at the men, injuring one and killing the other. (The Santa Fe New Mexican, Santa Fe, NM, 04/12/10)

From The Armed Citizen Archives
August 1976: A lone gunman entered a Bellville Ill., pharmacy and at gunpoint demanded drugs from store manager Leonard Lautz. Instead of handing over the drugs, Lautz drew a pistol and fired one shot over the would-be robber's head. The surprised crook quickly surrendered. (The Steeleville Ledger, Steeleville, Ill.)