MOPP 4
HILL AIR FORCE BASE, Utah-- Airman 1st Class Gabriel Nascimento, 75th Comptroller Squadron, is assisted with his gas mask by Staff Sgt. Shaun Deegan, 75th Mission Support Group during during an operational readiness exercise held here. This is the first time the 388th Fighter Wing, 419th Fighter Wing and the Ogden ALC have jointly participated in readiness exercises (U.S. Air Force photo by Alex R. Lloyd)