Concerns About NATO Summit Violence Leave Chicago Guessing About Security

...plans in place for a mass evacuation of downtown in the event of riots on May 20-21 ... Red Cross memo out of Milwaukee indicates.... Officials there have been asked to make plans to assist residents in the event of a mass exodus. Chicago officials say the plan didn’t come from them. The U.S. Secret Service isn’t talking. There also are reports that a heavily armed security team will start making a very public appearance around federal buildings in the Loop this week. Officials with the Chicago NATO host committee were completely in the dark. They had no reports of any such plans. A source told CBS 2 that security forces in full battle gear would not be seen this week. ...