LANGLEY AIR FORCE BASE, Va. -- Senior Airman Brian Miezejeski (left), 1st Equipment Maintenance Squadron F-15 crew chief explains the dynamics of crash and recovery equipment to other crew chiefs during an evaluation Dec. 14, which tested the 1st EMS’ response to a simulated aircraft crash. Crew chiefs must be prepared to respond to emergencies at any given time, in any weather condition. (U.S. Air Force photo/Airman 1st Class Vernon Young)