The fire began as a small flame after the lions performed, on the southwest sidewall of the tent, while the Great Wallendas were performing. Circus bandleader Merle Evans was said to have been the first to spot the flames, and immediately directed the band to play "The Stars and Stripes Forever", the tune that traditionally signaled distress to all circus personnel. Ringmaster Fred Bradna urged the audience not to panic and to leave in an orderly fashion, but the power failed and he could not be heard. Bradna and the ushers unsuccessfully tried to maintain some order as the panicked crowd tried to flee the big top.