Major Michael Fea, 779 AMDS biological environmental engineer flight commander, uses a INSERT Multi-Ray Detector to check for radiation inside a mock diner at the Center for Center for National Response in Gallagher, West Virginia, March 29. Major Fea along with other members form the 79th Medical wing, 11 Civil Engineer Squadron and Air Force District of Washington participate in a week of different exercises as part of the annual Black Flag training. (U.S. Air Force photo by Senior Airman Melissa V. Brownstein)