PRESS PHOTO BY ROB MERCHANT Harrison Bailey does not coach a football team. He's the principal at Liberty HS, but that does not mean he can escape the ALS Ice Bucket Challenge. Megan Latham and Ryan Brong unleash the cold water during the Liberty-Bethlehem Catholic football game Aug. 29. Latham, is a member of the student cheering section and Brong is a member of the Grenadier Marching Band. Assisting the students is Erin Michael, the head coach of the cheerleading squad. 'I am honored to have done it for