>> virtual threat. real sweat. >> police be very careful with suspect. >> simulation scenarios like terrorism acts, hostage situations, riots and natural disasters. >> you go ahead and command the scene. >> we are clear to go inside the building. >> this givings emergency responders on screen experience from this very he room strategically preparing them for any major catastrophe. a simulation specialist says he can develop any mission ready emergency including the movie massacre in colorado where officers, firefighters, s.w.a.t. teams and all other emergency responders. >> the scenario is we have a guy that came into a movie theater and he had a gun and he had a rifle and he had i'm not sure what he had. and the movie theater is full. what are you going to do? what is going to happen? >> then trainees move around