914th Aeromedical Staging Squadron members prepare a patient for transfer on a litter (stretcher) during a recent mass casualty exercise at the Niagara Falls Air Reserve Station, N.Y. on September 9, 2012. The exercise was conducted to test the medical readiness and skills of the unit during an emergency. This exercise is an annual requirement for the ASTS. (U.S. Air Force photo by Peter Borys)