Staff Sgt. Keith Diamond, 434th Maintenance Squadron structural maintenance technician, left, tightens the hood of Master Sgt. Kathy Castleberry, 434th Maintenance Group scheduler, during chemical, biological, radiological and nuclear defense [CBRNE] training at Grissom Air Reserve Base, Ind. Oct. 14, 2017. The hands-on CBRNE training served both as a refresher for the experienced or was the first time many Airmen had received hands-on training on ATSO, or the ability to survive and operate in wartime conditions. ( Air Force photo/Staff Sgt. Katrina Heikkinen)

---

Size: 4928px × 3280px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 434, 434arw, 434th, air, arb, arw, base, cbrne, grissom, refueling, reserve, wing