Jack Jefferies, D-10287, was a founding member and coach of formation skydiving team Arizona Airspeed. The team won multiple 4- and 8-way nationals, world cups, and world championships during Jefferies’ tenure between 1995 and 2012. Airspeed was (and still is) one of the most recognized and decorated competition teams in our sport’s history. But perhaps more importantly, the team shared its techniques and training regimens with other teams to promote and advance sequential formation skydiving, bringing it to the level it has reached today. Jefferies’ involvement helped move the sport toward a more positive, humanistic culture and he remains one of the most respected coaches in the nation with more than 18,000 skydives.