 I'm Steve Kathan. Hours after powerful storms rolled through, officials say they fear a river dam could fail in Nashville, Illinois, east of St. Louis. There has already been a breach. Thousands have been evacuated. KMOV-TV's Steve Templeton. We're talking about flash flooding, lots of rain. Slam that on top of a reservoir filled with water. Water is going to flow over the dam and get into the streets, affecting roads and apartments and buildings and businesses.