Comer was convicted in a 1987 crime spree in which he killed a fellow camper at Apache Lake east of Phoenix. He also was convicted of repeatedly raping a female camper the same night, once in front of her boyfriend. "This is my life. I made the decision to pull my appeals," Comer said, according to transcripts from a 2002 competency hearing. "Remember I stuck a gun in the guy's ear and pulled the trigger, scrambled his brains, right? You sentenced me to die. You have that right in this state. I don't see where the big problem is."
Comer took a picture of his daughter into the death chamber with him and seemed defiant as he smiled and maintained eye contact with his witnesses as drugs coursed through his body. His last words were "Go Raiders!" (referring to the NFL football team) and with that, his smile slowly faded until he passed out. His chest stopped moving after the third drug was given to him. By 10:08 a.m. he was dead. Just hours before his execution, Comer told prison workers "I am ready." He requested fried okra, four buns with butter, salt, two slices of banana bread for his last meal.