U.S. Air Force Airmen test for potential hazardous materials during an Integrated Base Emergency Response and Capability training at Langley Air Force Base, Va., Jan. 13, 2015. The training primarily focuses on bioenvironmental engineering, civil engineer emergency management and fire emergency services to train response capabilities in the event of a chemical, biological, radiological, nuclear and high-yield explosive threat. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)