The video that I posted with this article illustrates a Deputy around Effingham, IL. He stops his vehicle short of the incident to check victims. There is a visible plume floating across the road but the deputy gets tunnel vision. He is completely fixated and helping victims. First sign...Tunnel Vision. This deputy is experiencing an adrenaline dump. The tunnel vision is causing everything in his vision to be pinpoint. He is not aware of his surroundings. Pan back as yo