FILE - In this April 15, 2008 file photo, Terry Crenshaw, wardens assistant at the Oklahoma State Penitentiary, walks past the gurney in the execution chamber at left, in McAlester, Okla. At right are the rows of chairs in which witnesses to executions are seated. Oklahoma prison officials are unveiling new execution protocols to replace those used when an inmate took 43 minutes to die last spring. (AP Photo, file)