Written by J. MICHAEL STRACZYNSKI & CHRIS ROBERSON Art by EDDY BARROWS & J.P. MAYER Cover by JOHN CASSADAY 1:10 Variant cover by DAVE JOHNSON Superman meets Sin City as the 'Grounded' storyline takes The Man of Steel to Las Vegas! But waiting there for Superman is an out-of-control Livewire, who has become more powerful and erratic than ever. Can Superman (with the help of Jimmy Olsen) shut her down before she shuts all of Vegas down, and more important, is Superman somehow responsible for her condition? On sale MAY 11 ? 32 pg, FC $2.99 US ? RATED T