 INVESTIGATORS ARE NOW TRYING TO PIECE TOGETHER HOW A GUNMAN ARMED WITH AN AR-STYLE RIFLE WAS ABLE TO GET IN PLACE TO INJURE TRUMP AT HIS RALLY IN PENNSYLVANIA. FORMER SECRET SERVICE DEPUTY DIRECTOR A.T. SMITH IS A CBS NEWS CONSULTANT. THERE IS NO EXPLANATION WHATSOEVER FOR HOW AN INDIVIDUAL WAS ABLE TO GET ON TOP OF A BUILDING AND BE THAT CLOSE WITH A LONG RIFLE AND THE FBI'S INVESTIGATION WORKING HAND IN HAND WITH THE SECRET SERVICE WILL LOOK AT EVERY ASPECT OF THIS.