Annual Fire Muster Challenge 2015 Published Oct. 20, 2015 By Airman Caelynn Ferguson 17th Training Wing Public Affairs GOODFELLOW AIR FORCE BASE, Texas -- U.S. Air Force participants perform a simulated ‘Bucket Brigade’ exercise during the Annual Fire Muster Challenge beside the Fire Department at Goodfellow Air Force Base, Oct. 9, 2015. Participants had to fill up a water bottle attached to a simulated roof in order to pass on to the next obstacle in the challenge. (U.S. Air Force photo by Airman Caelynn Ferguson/Released)