Practicing to stay safe
Senior Airman Thomas Barclay suits up for a mission-oriented protective posture 4 during a simulated alarm red attack at Yokota Air Base, Japan, during a 374th Air Wing exercise. MOPP levels relate to chemical or biological hazards. Airman Barclay is with the 374th Maintenance Squadron. (U.S. Air Force photo/Senior Airman Veronica Pierce)