“He probably would’ve killed my wife – off of this cell phone they shouldn’t even have," Johnson told Fox News about the 2010 shooting.
Now Johnson, who retired after the shooting, has become the face of a national effort to get cell phones out of the hands of inmates – by using jamming technology that blocks cell phone use in prisons.
“My goal is to stop this,” Johnson said.
As much as jails and prisons try to keep out cell phones through sophisticated metal detectors, inmates keep figuring out a way to smuggle them in. Experts say the only way to keep inmates from using them to conduct criminal activity is through cell phone jamming technology in state and local corrections facilities. They are currently illegal in jails and prisons.