 CBS NEWS SPECIAL REPORT. FORMER PRESIDENT TRUMP GRAZED BY A BULLET DURING A CAMPAIGN RALLY IN BUTLER, PENNSYLVANIA. HE IS OKAY. ONE PERSON WAS KILLED, TWO OTHERS CRITICALLY INJURED. CBS'S BOB COFSTA ON SECURITY. TO HAVE SOMEONE, AS CBS NEWS HAS CONFIRMED, ON AN ELEVATED STRUCTURE NOT THAT FAR, JUST HUNDREDS OF YARDS, MERE HUNDREDS OF