As Christa Pike remains hospitalized, unconscious, on a ventilator in critical condition after a failed execution attempt, the man in charge of Tennessee prisons has announced his resignation.  Governor Bill Lee did not directly reference the situation with Pike, or with this spring’s botched execution of Tony Carruthers, but said Department of Correction Commissioner Frank Strada stepping aside is "in the best interest of Tennesseans as the independent review moves forward."  Strada was most recently the Deputy Director of the Arizona Department of Corrections where he last oversaw three troubled lethal injections that all involved personnel not being able to find the inmates’ veins.