Investigators say they found briefcases filled with anti-government material inside a van but no explosives or drugs in Princeton, Illinois, Wednesday afternoon. That's after an explosives scare that allegedly included threats against the president and Washington D.C. Authorities credit a truck driver for intercepting threatening chatter over CB radio that could lead to more serious charges against Terry Daniel (photo at right), 44, of Cedar Rapids, Iowa. Tammy Chamberlain knows all about the fear and uncertainty. At the Princeton gas station where she works, police tape surrounds a van. It's a van suspected to be carrying explosives bound for Washington,...