An exercise promoting teenage responsibility Tuesday at Portal Middle/High School made it clear how easily fun can turn tragic after law enforcement officers broke up a "party." It wasn't a real party, but as the "Teen Maze" project unfolded, the scenarios the Portal 10th graders drew were amazingly realistic. Some were jailed - for underage drinking, drug abuse, DUI. Others were directed elsewhere in the "maze," which was constructed in the school's gym.