BANGOR – The Eastern Maine Cheerleading Championships will be held Saturday at the Bangor Auditorium. Classes B and C start at 10 a.m., with doors opening at 8, and the class A competition gets under way at 4:05. Doors will open at 3:15. Tickets, which are separate for each session, are $5 for adults and $3 for students. Spectators will be allowed to purchase tickets at the Auditorium, starting at 8 a.m. The Maine Principals Association will be sponsoring a video of the competition, which can be ordered at the Auditorium for $20.