Delivery drivers have trucks full of valuable, brand-new merchandise, and don’t have a lot of visible security protection. That may be the reason why delivery drivers for the U.S. Postal Service, UPS, and Amazon have recently been the targets of burglars, armed robbers, and even carjackers on Chicago’s South Side. This string of very similar crimes has been happening since December, and the most recent incident was on Tuesday morning. A delivery driver for Amazon, who was driving an Enterprise rental truck and not a branded Amazon vehicle, says that men in ski masks approached him while he was in the back of his vehicle.