Training to live Published Oct. 31, 2002 YOKOTA AIR BASE, Japan (AFPN) -- Chief Master Sgt. Danny Corprew, wearing a chemical warfare ensemble, prepares a bed for simulated casualties during an exercise here. The training ensures hospital workers can sustain, survive and perform their mission in a conventional, nuclear, biological and chemical combat environment. Corprew is superintendent of the base's 374th Medical Group. (Photo by Master Sgt. Val Gempis)