Several tractor-trailers jackknifed on Interstate 65 in northeast Alabama. A truck jackknifed and hit two cars. The drivers of the car and the tractor-trailer that jackknifed were not hurt. The train was traveling with its cab car in the front, and the train jackknifed. The cars jackknifed into the roller coaster wood and as a result, Comet was closed. The destroyer jackknifed and went down rapidly. The horses took fright, reared up and the coach jackknifed.