THE OKLAHOMA CITY BOMBING: ONE BY ONE... PEOPLE WHO SAW TOO MUCH, PEOPLE WHO KNEW TOO MUCH...WERE MURDERED  Jack Colvert, Jackie Majors and Buddy Youngblood had also been at the Murrah Building that morning. Each saw Mike Loudenslager alive and well after the bombing.  They're all dead.  So are Dr. H. Don Chumley and Officer Terry Yeakey.  As are, it is now said, about thirty people who either knew too much, or asked too many questions.