Florida Marine Lt. Col. Karl Trenker and his fiancee will probably think twice before posting jewelry for sale on Craigslist again. (Actually, they will probably never use Craigslist again to post a sale – at least, we wouldn’t.) It all started when his fiancee posted a gold chain for sale on Craigslist. And ended with Trenker being shot three times, and plugging the bullet holes with his fingers while waiting for help to arrive.