The withdrawal of U.S. snowboarding star Shaun White from one of the events could be a troubling sign . NEW : Among the terror concerns is explosives in toothpaste tubes on planes . Preparations in the Winter Olympics host city are up against the wire . The U.S. government has warned that terrorists could use bombs hidden inside toothpaste tubes. One bright spot is the weather ; officials say snowfall has been ample .
NEW : Among the terror concerns is explosives in toothpaste tubes on planes . Preparations in the Winter Olympics host city are up against the wire . The U.S. government has warned that terrorists could use bombs hidden inside toothpaste tubes. One bright spot is the weather ; officials say snowfall has been ample .