1st Lt. Kyoung Craddock and Tech Sgt. Karissa Kvam, 446th Aeromedical Evacuation Squadron, carry a litter with medical equipment onto a C-17 Globemaster as part of an Ability to Survive and Operate exercise on Joint Base Lewis-McChord, Oct. 14. The ATSO exercise, Amber Waves, was designed to ensure the reservists' ability to launch and recover an aircraft sortie and execute a medical transport mission in a chemcial or biologcal warfare environment. Airmen needed to demonstrate their ability to complete the mission requirements while donning their Mission Orinented Protective Posture gear to fully protect them from potential chemical attacks. (U.S. Air Force photo by SSgt. Daniel Liddicoet)