In Canada, another so-called bomb train laden with crude oil has derailed in northern Ontario, marking at least the fourth fiery derailment in North America in three weeks. The train laden with oil from Alberta caused a massive fire and a shroud of black smoke. Five cars went into the Makami River. Meanwhile, fires were still burning in Illinois after a train carrying oil from North Dakota derailed Thursday. The U.S. Environmental Protection Agency warns the spill threatens the Mississippi River.