Action Comics (1938) #781

"OUR WORLDS AT WAR," Part 20. The man of Steel is torn in many directions as Imperiex's probes continue to ravage Earth. Meanwhile, Lois and the President deal with their unearthly terrors, the MASH unit in space faces its own assault with only the injured JLA able to protect it, and two heroes sacrifice themselves as another part of Superman dies as well.