JSA: Our Worlds at War (2001-) #1 (NOOK Comics with Zoom View)

It's time to call in the reserves...all of them! When President Luthor sends the JSA to take out Imperiex's base--a battleship the size of Jupiter--Sand fills out the ranks with Power Girl, the Ray, the Shining Knight and a dozen others. But the horrible secret of Imperiex's power may prove too much for the JSA allies to handle.