Strongman Mark Kirsch pulls a 140,000 pound KC-135 Stratotanker July 1, 2011, during the Battle Creek Field of Flight and Balloon Festival in Battle Creek, Mich. The KC-135 is assigned to the 54th Air Refueling Squadron at Altus Air Force Base, Okla., and was the first Air Force plane to ever be pulled by a strongman. (Courtesy photo)