SELFRIDGE AIR NATIONAL GUARD BASE, Mich.-- Tech Sgt. William Kaufmann, from the 127th Civil Engineer Squadron's Emergency Management office, conducts training in chemical, biological, radiological, & nuclear safeguarding measures, here on June 9, 2021. This hands-on training allows members to maintain readiness by learning ways to safely operate in contaminated environments. The ability to conduct war-fighting operations in threatening conditions gives Airmen a competitive edge in the fight. (U.S. Air National Guard photo by Staff Sgt. Drew Schumann)