The state of Alabama executed Alan Miller using nitrogen gas on Sept. 26. Alabama Attorney General Steve Marshall said in a statement afterward that the execution “progressed as planned,” with Miller making “slight movements associated with the dying process. … the State proved once again that nitrogen hypoxia is both humane and effective.” Except, as Lauren Gill writes for the Intercept, Marshall did not witness the execution. Gill did. She writes of what she saw after being ushered into the witness room: a respirator mask ran the full length of Miller’s face and was connected to a hose and…