 I don't think it works that way. In fact, I know it doesn't work that way because as Colin Rugg on Twitter has pointed out, the snipers who were behind Trump during the rally, the ones who didn't take out the bad sniper before it was too late, they are on a sloped roof. Okay, so you already have security agents on sloped roofs at this very rally. And yet that particular sloped roof, you couldn't be on because it has a slope.