Brains, a member of the Gang, has managed to elude Supergirl and, while fleeing, discovers a secret operation which includes a giant robot that has attacked Chicago's O'Hare Airport. So it's up to Supergirl to save the day in "Battleground O'Hare." 

Written By: Paul Kupperberg Tamsyn O'Flynn Pencils: Carmine Infantino Bob Oksner Inks: Bob Oksner Cover By: Gil Kane