Two young children are killed on their way to school. Investigators say the 5 and 6 year olds were two of more than a handful of kids waiting to board the school bus when they were hit by a tractor trailer trying to cross the Virginia road. A State Police spokeswoman says the bus driver tried to alert the crossing kids. Students already on the bus at the time witnessed the horrific tragedy. No charges will be filed for the tractor trailer driver who police say had a valid commercial license.