Article Photos: Letters from inmates prompt most early releases, former board member says 12/13

  Oklahoma Gov. Mary Fallin addresses a group on natural gas vehicles in Oklahoma City, Wednesday, Aug. 8, 2012. Officials with automobile manufacturers, converters and dealers are meeting in Oklahoma City to discuss a request for proposal from nearly two dozen states for the nation's auto makers to produce natural gas-powered vehicles for state fleets. (AP Photo/Sue Ogrocki)