...Sometimes even if you're clueless on how to shoot it. Even if it's a BB gun! I don't recommend that method but it worked.
The tl;dr version: a woman in Muncie, a mom with grown kids, surprised an intruder (taking her Xbox apart!) in her home and reached for the shotgun she'd never shot. Picked up a BB gun instead, which proved to be more of a threat than the intruder cared to brave; she marched him outside and yelled next door for her adult son to call 911.
Score: Mom 1, bad guy 0. And she's going to go learn how to shoot. (And, for that matter, not shoot; it really is safer if you know how to work the firearms you've got -- even BB guns.)
2 months ago