Yesterday, our look at the volunteers who make possible every run, triathlon, road bike ride, mountain bike race, adventure race — whatever kind of amateur competition you can think of — left off with a bevy of helpers trying to help an ailing 42-year-old Richard McKnight of Arizona finish the last five miles of the Umstead 100 endurance race. Today, a look at more of the 300-plus volunteers who made the Umstead 100, held April 2 and 3, happen — and whether they could help get McKnight to the finish.