Like everything Vegas-bred, The Killers keep getting bigger, bolder and flashier. Just look at the production credits for their fourth album: Steve Lillywhite, Damian Taylor, Brendan O'Brien, Stuart Price, Daniel Lanois. Dang! And, so, Battle Born doesn't gallop along like that horse on its cover; no, it storms the heavenly gates of stadium-shaking balladic rock with references to hell's fires, life's brevity, Elvis and "burned-out halos." And since synths make everything seem more magical, there are plenty here to help make this Springsteen/Journey/Meatloaf/"November Rain" juggernaut sparkle.