. >> reporter: the footage shows officer durell take cover as he fires the one fatal shot that stopped roddick. >> i got him. he's down, he's down. >> to have the presence of mind to know people are being shot at and to know this guy is armed to the hilt and to be able to stop yourself, take in that picture, slow your breathing and pull that trigger one time and end this thing. >> reporter: he says not only durell, but all officers who fired in an team to stop roddick were justified, bringing to a close the investigation >> lauren dispirito reporting there. officer durell had just gone through weapons training one month before this shooting. >>> today denver international airport wants to fill 400 jobs. officials will have a job fair today from 10 until 12:30 at the green valley ranch recreation center. they need to fill many spots. tickets to roger waters. cbs4 has 10 pairs of tickets to give away and one grand prize. the grand prize includes dinner and uber to the show and best seats in the house. it's june 3rd at the pepsi center. cbsdenver.com for a chance to win. >>> bret saunders

the video you're about to see is from the perspective of parker police officer ronnie durell. he fired killed suspect randy roddick, bringing his shooting spree to a halt. >> where is he at? >> front seat. i got him, he's down. >> reporter: that brief muffleed pop was the fatal shot. it's force the district attorney's office determined was justified. >> to know there is an officer down, to know people are being shot at and this guy is armed picture, slow your breathing and pull that trigger one time and end this thing, that is an amazing shot. >> reporter: investigators say roddick was using a fully automatic ak-47, firing shots at officers and bystanders, all unfolding north of sierra mill school. rod-- middle school. roddick had a shotgun, handgun and thousands of rounds of in his vehicle. in his house, a secret room that opened to a guns and ammo room. >> what if this guy's wife had not alerted law enforcement to his behavior and what he was doing? law enforcement wasn't able to try to keep him in this very small area as he loaded his rv full of all of these implements of d

some cars trying to take cover and the suspect opened fire and derail returns just one shot officer durell did everything just right. to know that there's an officer down to know that people are being shot at into know that this guy is armed to the hilt into and to be able to stop yourself take in that site picture slow your breathing and all that trigger and end this thing that's an amazing shot. district attorney has rolled offi in shooting and killing the suspect on the afternoon. for detective dan bright we are told that he is still recovering a rehab center right now but the police chief here dan king and parker today called him an amazing warrior. a warrior left the scene that day without a pulse and of course tremendously lucky to be a live here this afternoon. live in parker fox 31. thank you. new at this hour. the rocky ford officer, who is convicted of killing a man while on duty is scheduled to be sentenced. james ashby became the first officer in colorado, in decades to be convicted of second degree murder for something that happened while on duty. jack jacquez was shot and kil

and they are called bacteriophage and they were discovered over hundred years ago actually felix durell, the doctor who discovered them found them in people who were sick with dysentery and he realized that he could actuallyl kill all of these dysentery causing bacteria with these viruses and he said, this could be a drug. so, actually incredibly, peoplec forget this, but in the 1920s you could buy powder within these viruses in it in paris, i mean, it was being mass-produced and it was quite popular. antibiotics came on scene and they seemed more reliable, more kind of a tractable because they are just chemicals and not almost lifelike viruses are and so there was a shift. really, the only place where this kind of approach called phage therapy was continued to be used was in the soviet union, so world war ii, stalin soldiers are getting wounded on the battlefront and suffering infections. they are being treated with phage therapy. they're getting viruses on their wounds and in some cases it'sme working. since the fall of the soviet union, some of those people came to the united states