ELLSWORTH AIR FORCE BASE, S.D. – (Left) Staff Sgt. Aaron Smith, 28th Medical Operations Squadron ambulance services technician, assists Staff Sgt. Mellisa McQuagge, 28 MDOS ambulance services technician, with putting on her mission oriented protective posture gear during a Phase II Operational Readiness Exercise, May 12. A Phase II ORE is designed to prepare Airmen for deployed operations, including potential chemical attacks. (U.S. Air Force photo/Airman 1st Class Matthew Flynn)