U.S. Air Force Senior Airman Felicia Still, 633rd Aerospace Medicine Squadron bioenvironmental engineer technician, assists Airman 1st Class Alex McClendon, 633rd AMDS bioenvironmental engineer technician, with donning a hazardous material suit during Integrated Base Emergency Response and Capability training at Langley Air Force Base, Va., Jan. 13, 2015. A team of Airmen entered a simulated contaminated area to test for hazardous materials. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)