They say they're kept in their cells all but 3 hours a week
                                
                                
                                    (Newser) -
                                    The maximum-security Utah State Prison sits about 20 miles outside of Salt Lake City, in Draper, Utah. Within its walls, in the Uinta 2 housing unit, live what's referred to as the Special Threat Group, or STG. These inmates, who have been branded violent, say they're kept in...