If we’re just going to pull up random news stories:

Senior Citizen Shoots Armed Robbers at Internet Cafe

http://www.gunsandammo.com/2012/07/18/senior-citizen-shoots-armed-robbers-at-internet-cafe/

14-Year-Old Boy Shoots Armed Intruder in Home

http://www.gunsandammo.com/2012/07/02/14-year-old-boy-shoots-armed-intruder-i-home/

Teen Mother Kills Armed Intruder, Becomes National Sensation

http://www.gunsandammo.com/2012/01/07/sarah-mckinley/#ixzz2WRCFEBvY