As soon as Air Force Staff Sgt. Corey Czajka saw a car in front of him hit a vehicle and roll over on July 17, he knew he had to put his military training to work. Czajka, a medical technician with the 21st Aerospace Medicine Squadron at Peterson Air Force Base, Colo., had been returning from a fishing trip with his wife and a colleague when he witnessed the accident. He helped clean blood from the conscious female victim, and stabilized her spine before trying to move her. Then he assessed her coherency by asking her questions, and stayed with her until civilian paramedics arrived. “You didn’t have to think about it, you just did it,” Czajka said afterward. “What I did there was no more than what I teach in my [self-aid and buddy care] class.”