7th AF Command Chief
Tech. Sgt. Jason Baraceros, 51st Civil Engineer Squadron airman dormitory leader, demonstrates the collection protection system in building 1465 for Seventh Air Force Command Chief Master Sgt. Anthony Johnson, during his 51st Mission Support Group immersion at Osan Air Base, Republic of Korea, Dec. 10, 2015. The CPS dormitories ensure a chemical-free environment for personnel in the event of chemical, biological, radiological or nuclear threat. (U.S. Air Force photo/Staff Sgt. Amber Grimm)