Teams of survival experts Wednesday tested their ability to assemble firearms, shoot rifles, do push-ups, sit-ups and pull-ups, and run six miles with 45-pound packs at the U.S. Air Force Survival School on Fairchild Air Force Base. Oh, and that was all after spending the previous two days swimming across barely thawed ponds, traversing 21 miles of mountainous terrain and evading capture on about six hours of sleep.