Dad is number 12 in the class. My mother shot the video, and the man you can hear shouting encouragement is Tommy Clouse, a professional horse trainer and close friend.
For those of you who are unfamiliar with the five-gaited horse, I'll offer this: Horses will do three gaits naturally; walk, trot, and canter (gallop or run). The natural gait for a horse when he wants to get along down the road is the trot, which is a little rough to ride. The other two gaits are man-made, and called the rack and the slow-gait. Both of these gaits are smooth and very easy to ride. Horses tend to rack about as fast as they can trot, and slow gait a little faster than a walk.
Dad won the class, and as he makes his victory pass you may note that he holds the reins in one hand while Penny racks. He's showing off a bit, as the other riders would need both hands on the reins to keep their horse at a rack.