Two trains collided in southeastern Wisconsin on Sunday night, causing 5,000 gallons of diesel to spill, a fire official said. Three engines and 10 rail cars derailed at a point where the tracks crossed, Slinger Fire Department Chief Rick Hanke said. Residents within a half-mile radius were evacuated due to concerns over the flammability of the diesel and contamination from the spill, Hanke said. More than 100 homes are in the evacuation zone. A conductor and an engineer suffered injuries that are not life-threatening, the fire chief said.