ALPENA, Mich.-- An instructor with the 127th Civil Engineering Squadron assists Tech Sgt. Chanel Daniels, 127th Force Support Squadron, in adjusting her gas mask during Battle Lab training at the Alpena Combat Readiness Training Center on July 29, 2018. During the training, Airmen of the 127th Wing, like Daniels, practiced donning and removing different levels of chemical protection equipment during an operational readiness assessment exercise. (U.S. Air Force photo by Master Sgt. David Kujawa)

- Image ID: PCJC64
ALPENA, Mich.-- An instructor with the 127th Civil Engineering Squadron assists Tech Sgt. Chanel Daniels, 127th Force Support Squadron, in adjusting her gas mask during Battle Lab training at the Alpena Combat Readiness Training Center on July 29, 2018. During the training, Airmen of the 127th Wing, like Daniels, practiced donning and removing different levels of chemical protection equipment during an operational readiness assessment exercise. (U.S. Air Force photo by Master Sgt. David Kujawa)
AB Forces News Collection / Alamy Stock Photo
Image ID: PCJC64