amy: linwood mathias is featured in the new report by hannah beckler, investigations editor for insidersday, i spoke with hannah and we were joined by another man, who was formerly car serrated -- formerly incarcerated in virginia and was attacked by a dog at red onion state prison in 2015. i began by asking hannah to lay out her findings and to talk about the connection between the use of prison dogs in u.s. prisons and abu ghraib. the notorious prison in iraq where prisoners were tortured. hannah: thank you for having me. in abu ghraib, dogs were introduced in 2003. the roots of this program really go back to the united states, both in guantanamo bay and other correctional facilities. eight private contractors were hired by the u.s. government to select a site and build abu ghraib and train staff. all eight of these men were former high-level administrators in state systems and all eight men were responsible for launching, administering or expanding programs in the u.s. that used attack trained dogs in the 1980's and 1990's to attack or terrify people who were incarcerated. amy: expla