Touch your elbows to your knees? Easy. Do it while hanging from a pull-up bar 50 times? That’s something else entirely. Airmen at Kirtland AFB, N.M., didn’t stop there. Competing in the Maltz Challenge—a timed, team competition—they set out to complete a 400-meter run, 50 pull-ups, a 100-yard fireman’s carry, 50 dips, 100 push-ups, 100 sit-ups, those 50 elbows-to-knees, and then another 400-meter run. Call it airpower of another sort.