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)
Staff Sgt. Robert D. Miller, 2nd Aerospace Medicine Squadron, adjusts the straps of an M-50 gas mask during a gas mask fit test on Barksdale Air Force Base, La., Jan. 10. Gas mask fit tests, which are held every Thursday from 8 a.m. to 11 a.m. at Bio-Environmental Engineering, ensure Barksdale Airmen have the correctly sized gas mask that can protect them from chemical and biological warfare agents. (U.S. Air Force photo/Airman 1st Class Benjamin Gonsier)
Airman 1st Class Brandon Johnson, 608th Air Operations Center operations intelligence analyst, checks the seal on an M-50 gas mask on Barksdale Air Force Base, La., Jan. 10. Barksdale personnel perform a number of breathing exercises to ensure they have the correct gas mask size and that there is no break in the seal. (U.S. Air Force photo/Airman 1st Class Benjamin Gonsier)
A Photocount Plus machine displays data as Airman 1st Class Brandon Johnson, 608th Air Operations Center operations intelligence analyst, receives a gas mask fit test on Barksdale Air Force Base, La., Jan. 10. The machine takes 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)
Staff Sgt. Robert D. Miller, 2nd Aerospace Medicine Squadron, records data from a gas mask fit test on Barksdale Air Force Base, La., Jan. 10. Gas mask fit tests, which are held every Thursday from 8 a.m. to 11 a.m. at Bio-Environmental Engineering, ensure Barksdale Airmen have the correctly sized gas mask that can protect them from chemical and biological warfare agents. (U.S. Air Force photo/Airman 1st Class Benjamin Gonsier)