"Waiting in the Sky"
Features a Batman (1940) #232 homage cover.
*It's all-out war on Mars when an enraged J'onn J'onzz takes the fight to the despot Ma'alefa'ak. Meanwhile, Ms. Martian, Mr. Biscuits and the others try to save the Martian people from annihilation by transforming a city into a cosmic lifeboat before the red planet collides with Earth! *Source: dccomics.com