The 46-year-old former U.S. Marine officer will run the JFK 50-mile ultramarathon near Hagerstown on Saturday followed by a 95-mile bike ride on the C&O Canal Towpath to raise money for post-Sept. 11 veterans seeking to perform community service. How did you get involved with the Mission Continues?

It’s a charity based in St. Louis, with a focus on those who are injured and can’t serve in the military any longer but still want to serve somehow. It provides fellowship to veterans — it’s a win-win for everyone.