Senior Airman Angela Hansen, 914th Aeromedical Staging Squadron medical technician, checks vital signs of a patient while Maj. Hoon Jung, 914 ASTS physician, examines and assesses the patient for neurological trauma during a recent mass casualty exercise which involved a multiple vehicle collision 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)