Senior Airman Megan Johnson and Airman 1st Class Emmanuel Alaniz, 56th Occupational Medicine Readiness Squadron bioenvironmental engineering technicians, search for leaks on a Level A HAZMAT suit Jan. 14, 2020, at Luke Air Force Base, Ariz. Level A suits protect against harmful vapors, gases, mists and particles from reaching the individual inside the suit. Bioenvironmental engineering’s mission is to provide reliable health risk expertise to optimize human performance and prevent adverse health effects of Airmen. (U.S. Air Force photo by Airman 1st Class Brooke Moeder)