Thrill of a lifetime comes to Bob Poissand of Davenport Road public school as he sits in real astronaut's seat in U.S. pavilion at Expo and listens to guide Mary Perk. Bob and the schoolmates around him are among the 770 children in grades 5 to 8 visiting the fair; first of 17;000 Metro children who'll get four-day trips for $30 each. They're enjoying it; despite the long walks and delayed lunch.
