FRESNO ANGB, Calif. -- Airmen from the 144th Fighter Wing respond to a simulated terrorist attack during the unit's Phase II Operational Readiness Exercise Nov. 1, 2008. Personnel rapidly evacuated a building under attack taking shelter in a nearby bunker and donning chemical protective suits. Members are shown here using the buddy system to check each other's equipment. (U.S. Air Force photo by 1st Lt. Theresa M. Chrystal)