Loading a feeder yesterday with three other guys, one scanning, two loading, P/T sup near the back breaking up jams on the belt. Suddenly we feel the trailer rocking. I figure a feeder driver is just getting antsy and hooking up early. It's happened before. Then we hear a engine roar, and the trailer starts moving away from the dock. Packages are flying off the belt and all over the yard. Damn near ripped the entire belt setup right off the truck. Turns out the yard spotter got his numbers mixed. The look on his face was priceless, he basically made a bunch of grunting sounds while the sup went up one side of him and down the other. Welcome to peak!