Foes of illegal immigration are up in arms over plans for a weekend disaster exercise in western Iowa with a fictitious scenario in which young white supremacists shoot dozens of people amid rising tensions involving racial minorities and illegal immigrants. The exercise is planned for Saturday at Treynor High School in Pottawattamie County and will involve more than 300 people, confirmed Doug Reed, the lead exercise planner for the county's emergency management agency. Some 30 to 40 "victims" will be transported to area hospitals. He said a terrorism scenario is required by federal officials for the exercise to be eligible...