another so-called establishment candidates. they're all right now in single digits and they're sure to go all out in the debate tomorrow night trying to bring trump down to earth. bush supporters are trying to give him a jump start with a huge ad campaign while his rivals are prepping for the debate, trump is aboard a uss battle ship "uss iowa" he'll talk national security, international affairs, that supposedly a weak spot in his campaign but sure to fire up some major broadsides. let's begin our coverage this hour with our senior washington correspondent. jeff, set the scene. what's the latest? >> reporter: wolf, this is the place where the republican candidates hope to have a breakout moment here. it truly is not an overstatement to say this is a make or break moment for so many candidates. of course talking to the audience here in this stage. but it's the man in the center of the stage right there, donald trump, who they're all trying to