U.S. Air Force Staff Sgt. Jonathan Jones and Senior Airman Joel Halpin, 86th Maintenance Squadron, utilize the buddy system to decontaminate each other during an exercise scenario, Ramstein Air Base, Germany, Dec. 15, 2009. The wing conducted an exercise to evaluate its mission readiness and the ability to survive and operate in a chemical environment. (U.S. Air Force photo by Airman 1st Class Caleb Pierce)