. >> reporter: we are on patrol with corporal gary cunningham along the roads and allies of realtor.say they were the first force in the nation to deploy the cameras with nine form officers. a 25-year veteran, cunningham it old school. >> can you say that when they approached you with the idea, that you were as embracing as you seem to be now. they use the camera, to punish us more than to help us. you wear it and say wait a minute. can you go to domestic. you have the girl crying, having a big black eye saying he did this, did that. you go to court changing the story. i didn't say that. let's play the tape. >> does it keep you in line. >> i had a trainee with me, we went to a call. the guy did something, ran in the house, slammed the door in my face. kicked the door open. back in the day you get them, throw them down. >> reporter: you rough them up a little you are saying. >> having the camera on me, when i grabbed him and i remembered "the camera, the camera." before implementing the programme the ri alto p.d. sumpinged a study in 2012, deploying wearable cameras to half the pal ro

we're on patrol with corporal gary cunningham, on the streets of rialto, population 100,000. and on the vanguard of bold cameras. the police here say that they were the first force in the nation to deploy the cameras with uniformed officers department wide. the 25 year veteran cunningham is old school. >> does it personally keep you in line? >> if we went to a call, and the guy did something, he went inside of the house and i kicked the door open, and back in the day throw him down and do all of this -- >> you roughed him up a little. >> roughed him up. but having the camera on me, when i grabbed him and i remembered the camera, the camera. >> body cameras are all the rage in law enforcement. so much so that the number of cities considering whether to deploy them seems to grow daily. >> the body cameras aren't a silver bullet. they're not going to solve every single issue out there. there's more to it. >> the federal government is now considering whether it will fund how longs more body cameras for police across the nation. in the meantime, the technology will continue to be