LANGLEY AIR FORCE BASE, Va. -- Mr. Rick Kellner, 1st Security Forces Squadron resources advisor, leads his team through the gas mask station of the Strong Man Competition obstacle course, here May 15. 1st SFS Airmen and civilians divided into 4-man teams to complete the obstacle course designed to build physical endurance and unit cohesion during National Police Week. (U.S. Air Force photo/Senior Airman Vernon Young)