SENIOR MASTER Sergeant Gregory Gudson, left, 51st Communications Squadron, gathers hostages in the 51st Fighter Wing conference room during a hostile take over of the building during the Initial Response Readiness Exercise/Combat Employment Readiness (IRRE/CERE) exercise at Osan Air Base, Republic of Korea. The quarterly exercise tests the 51st Fighter Wing's ability to respond to combat situations. Weapon shown is the M-4 Carbine compact assault rifle