Action Comics Vol. 1 (1938-2011; 2016-) #880

Plot

Nightwing & Flamebird are hot on the trail of the psycho sleepers when they run into another deadly duo—Reactron and Metallo! What do these two want, and how does it tie in with General Lane's plans? Meanwhile, Superman and Supergirl arrive on Earth searching for the shooter, but will their actions end up causing more harm than good? Captain Atom's memory is falling apart right in the heat of battle—can he keep it together without annihilating an entire town? Luckily a deadly new player is about to take that choice out of his hands—permanently...

CONTINUED FROM SUPERMAN: WORLD OF NEW KRYPTON #6 / CONTINUES IN SUPERGIRL #44