Action Comics Vol. 1 (1938-2011; 2016-) #881

Plot

The Hunt for Reactron' starts here! Spilling out of the stunning finale of 'Codename: Patriot,' Supergirl and Flamebird find themselves at each other's throats! What's happened to these two childhood friends to put them at such odds, and can Nightwing calm them down before the situation escalates? And just what are they going to do about all of the guys who are surrounding them? You know, the guys in the tanks? Continued in SUPERGIRL #45! Plus! James Robinson and Greg Rucka's Captain Atom co-feature continues! What is happening to Captain Atom, and more important, what's happening to his mind? Team Breach is on hand to lend some answers, but Atom probably isn't going to like them.

CONTINUES IN SUPERGIRL #45