 Across the state, 23 people in Knoxville had to be treated for various heat emergencies yesterday, three of which were transported to the hospital. WATE is reporting that hundreds of fans flocked to the McKay's bookstore during their 50th anniversary event. The Knoxville Fire Department reported that more than 500 people were in the parking lot at 5 p.m. Store managers made the decision to close down the event. The anniversary promotion gives book lovers the opportunity to receive prizes and trade credit to buy books.