reporter: in order to do that, not only diz he need to carry his medical equipment, but he has to carry a gun as well. a gun much like the one used by the shooters. well, you know, i don t want to get hurt. if somebody really have an intention like that, yesterday, where he was indisskrim nantly, i m the first one that gets there, the active shooter responds, i want to be able to defend myself an those civilians. reporter: that s him on the right. today, just one day after the shooting, we followed the doctor to this training facility. ready? ready, sir. this is another part of being a brand-new sort of doctor, going through training like this, with other members of the s.w.a.t. team to try to make sure he can defend himself in sixes where he is taking care of other patients. we are now going to the assault rifle injury-type
assault rifle injury type pattern which rips and spreads apart organs in your body, tissues in the body, vessels as they are going through. our tactics are changing for law enforcement. we go side way, now to the front to expose less organ injuries. that s interesting. instead of going like this. go side way and goes through both lung and the heart and the other side where you go from the front now you have a plate that protects your heart and one lung or the other you can still be functional. that s fascinating. because you see people approaching the lower profile. reporter: he grew up in iran and served in the military there so guns and combat aren t new to him but he never thought he d have to use those skills in america. did you ever think your experiences in the middle east were going to be useful here? never in a million years but now that i am here, i am, you know, this is one of my duties. i mean, when you sign it s a
defend myself and those civilians down there. shooters ready. ready, sir. that s dr. niki on the right. today just one day after the shooting we followed dr. niki to this training facility. ready sir. and this is another part of being a brand new sort of doctor, going through training like this with other members of the s.w.a.t. team to try and make sure he can defend himself in situations where he s taking care of other patients. we are now going to the assault rifle injury type pattern which rips and shreds apart organs in your body, tissues in the body, vessels. even our tactics are changing right now for law enforcement. we are going sideways and now we re going to the front to expose less organ injuries rather than so instead of going like this when the bullet goes through both lung and heart and comes through the other side where as