from wjz: U.S. Homeland Security Secretary Michael Chertoff is scheduled to visit BWI Thurgood Marshall Airport Monday to announce changes at airport security checkpoints. Chertoff will demonstrate what is called “Checkpoint Evolution.” …

According to the Web site, the checkpoints will feature soothing music to calm passengers, easy-to-read signs and Plexiglas conveyor belts allowing passengers to see their luggage move through the inspection process. The system also uses a new full body scanner. The TSA says it doesn’t show a person’s face and says images are deleted immediately after they are reviewed.