After Three Inmates Escaped Through An Overhead HVAC Vent In The Sullivan County Tennessee Jail Authorites Are Saying It Was Facility Failure And Human Error. In A Release Wednesday Sheriff Jeff Cassidy Said, All Vents Have Been Inspected And Measures Taken To Secure Them. Tobias Carr And Timothy Carver Were Both Found Dead After A Police Chase Over The Weekend. Johnny Brown Continues To Be At Large. There Is A $7500 Reward For Information Leading To Brown’S Arrest. Anyone With Information Is Asked To Call 1-800-TBI-FIND.