emergency bay at parkland hospital. four agents reach in and grab johnson and pull him out and start to run him down one corridor. looking for a safe place. >> mr. johnson, his whereabouts are being kept secret for security reasons. if anyone knows where mr. johnson is, it is not us at this moment. >> it was a signal moment in our cultural history. suddenly it occurred to us the right thing to do is turn on the television. >> reports continue to come in but in a confused and fragmentary fashion. >> president kennedy has been given a blood transfusion at parkland hospital here in dallas in an effort to save his life. it was odd because there were no commercials. it was just a continuous experience. >> two priests have entered the emergency room at parkland hospital where he rests after the assassination attempt which now was about a half hour ago.