An alert traveler spotted a bag containing a computer and passport that someone had left behind at Orlando International Airport. That person turned it over to Transportation Security Administration Officer Keith McKnight. But McKnight didn't take the bag to lost and found. Instead, he took the computer to a local shop, told them he'd bought it at a flea market and asked to have it wiped clean. Fortunately, the computer had a tracking device that allowed the owner to track it down. Police arrested McKnight, who resigned from his job.