Avengers Vol.1 #86
The Avengers and Nighthawk race to Atomic City (of Earth-712) to halt the launch of Brain-Child's doomsday rocket! However three members of the Squadron Supreme are currently guarding the launch site to ensure a safe liftoff! Fortunately after Wanda stops the launch, Nighthawk is able to explain to his teammates the dire situation! And Hyperion, Doctor Spectrum, and the Whizzer agree to join the assault on Brain-Child's tower fortress!
Printed: March 1971
Writers: Roy Thomas
Art: Sal Buscema and Jim Mooney
Cover: John Buscema and Jim Mooney