needed to plot their escape. >> and there you have one person that you completely trust and that you will do everything with. it's called go toe to toe with, go back to back with, knife to knife in the yard. it's that one person that if something pops off, you will hold them down. i believe that's the relationship they had after their cells got moved together. >> prisoners housed in the honor block are also allowed to wear civilian clothing instead of the traditional prison garb, which also may have allowed them to blend in easier once on the outside. their good behavior lands richard matt and david sweat jobs in the prison tailor shop. could that be where they accessed those tools needed to cut their way to freedom? >> it was truly extraordinary and unusual and almost impossible to duplicate, but we want to find out exactly what happened. and one of the big questions is, where did the tools come from? >> to answer that question,