Fire Mission?

There's the old saying about "When the dog hears the Fire Bell....". Don thought he heard someone yell "Fire Mission" and ran through the fire. That happens when you get older.
Actually, it was the insanely-popular "Warrior Dash" held in Jackson, MS on 4/21/12, a 5K race that includes a military-style obstacle course. It is connected with the St Jude charity. Yes, Don finished on the same day, and no, he did not wet his pants. That's just his Geezer outfit.