On December 30, 2013 two BNSF trains were due to meet in a small town called casselton in North Dakota where one of these trains was a westbound grain train with 3 ES44C4’s 6990 leading 6833 trailing and 6745 at the back but however the 45th car of the grain train derails due to a broken axle obstructing the line of a BNSF oil train with three BNSF locomotives Dash 9, 4934 leading, ES44AC 5958 trailing and at the rear was ES44C4 6684 and the oil train hits the 45th car of the grain train and sli