Barksdale Airmen receive gas mask fit test
Senior Airman Nicholas McRae, 2nd Aircraft Maintenance Squadron crew chief, and Airman 1st Class Nichole DeMoss, 2nd Operations Support Squadron airfield management, conduct a breathing exercise during a gas mask fit test on Barksdale Air Force Base, La., Jan. 10. During the test, a Photocount Plus machine measures the particle readings from the air in the room and compares it to the air found in the gas masks to ensure the masks are sealed properly. (U.S. Air Force photo/Airman 1st Class Benjamin Gonsier)