U.S. Air Force Senior Airman Zach Day, 633rd Civil Engineer Squadron emergency management technician, prepares a hazardous material suit for use at Langley Air Force Base, Va., Jan. 14, 2015. Airmen from bioenvironmental engineering, civil engineer emergency management and fire emergency services took part in a three-day Integrated Base Emergency Response and Capability training to enhance their response to a potential chemical, biological, radiological, nuclear or high-yield explosives threat. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)