Airmen test their mettle during Combat Endurance Challenge
YOKOTA AIR BASE, Japan -- Staff Sgt. Paul Goldsmith, 730th Air Mobility Squadron Global Decision Support System II system administrator, performs a low-crawl during the Combat Endurance Challenge at Yokota Air Base, Japan, Oct. 1, 2011. The 730th AMS sponsored the event raising approximately $1,700 for the National September 11 Memorial. (U.S. Air Force photo/Staff Sgt. Samuel Morse)