200111-Z-FD650-1130
U.S. Airmen with the 163d Attack Wing, California Air National Guard, including Staff Sgt. Kevin Wuerth, left, and Staff Sgt. DMarcus Broussard, right, evaluate a reaction found on chemical detection paper during CBRN Defense training, Jan. 11, 2020, at March Air Reserve Base, California. The biennial training helps ensure Airmen remain familiar with the protective equipment and procedures used during chemical biological nuclear and radiological attacks. (U.S. Air National Guard photo by Staff Sgt. Crystal Housman)