i don't know. >> to be clear, there's no scabies outbreak in tuscon. >> richard pratt is the director of health services for arizona's department of corrections after requests by "america tonight" he agreed to speak to us briefly outside his office. >> reporter: before it was privatized and after privatisation, what is the difference in staffing levels, when it comes to the medical care? >> staffing levels are the same. in fact, i tell you that corizon staffing levels have been coming up on a month by basis. the hours they were working with their existing staff exceeded the contract requirements. >> reporter: you are confident that corison is provides adequate good health care. >> i am. >> reporter: that is not true, according to a prison watch dock group. the american friends watchdog committee found health spending plummeted even though corison promised legislators they would provide services at a low cost. >> corison understands the importance of a careful balance between resources and resourcefulness. >> reporter: is the state saving money by privatizing health care in the prisons

six were killed and congresswoman gabby giffords was left with a gunshot wound to the head in tuscon, arizona in 2011. twelve were shot in aurora, colorado -- that movie theater in 2012. six more killed a month later at the sikh temple in oak creek, wisconsin. and just four months after that, 26 dead including 20 children, a mass murder at sandy hook elementary school up in newtown, connecticut. it does seem iconically, that we're the country where people have these rampage shootings. can you explain the rampage? the availability of guns is part of it. but this crime -- if you read this guy's manifesto, you can't like the guy in any way. his sense of entitlement, that somehow he's entitled to all these beautiful women, that somehow he has a right to personally own the rights of all these women is delusional. where did he get that delusion? where'd he get it? >> yeah, it is delusional. and part of this, chris, there is a segment. realize only four percent of the people who commit violence in the united states have a diaognosable mental health condition. not with standing that, there wa