All-Star Squadron (1981-1987) #15

As the JLA/JSA/All-Star Squadron teams defeat the Crime Syndicate on both Earth Prime in 1962, and Earth-2 in 1942, thereby preventing the stolen nuclear missiles from going off on both worlds, Per Degaton still as one more trick up his sleeve-use the last hidden stolen nuclear missile and detonate it in 1942, thereby forcing Earth-2's leaders to surrender to him.