increased the chance of survival by 30%. every soldier and marine now carries one-- not just medics. >> we used to train everyone. in the military a little bit about shock and, you know, loosen clothes, raise the legs, heink water, et cetera. now we realized fundamentally they need to be trained in some medical skills. we started off, obviously, in tents. >> reporter: with the war coming to a close, colonel mcmanus has treated his last casualty, but the lessons learned here have beaten him home. >> certainly these tools we have utilized have saved lives now in dana is off tonight. it good evening. i'm allen martin. >> i'm juliette goodrich. dana king is off tonight.