No surprise, actually. They had a story to tell to cover up LBJ's involvement in the assassination. Everyone who cooperated reaped a reward. Just to name a few examples:
There are even more examples, but those are a few that come to mind. Compromising the magic bullet theory would compromise these deep state promotions.
Rather held the title “Chief of Southern Bureau” for CBS 60 years ago. He was based out of New Orleans but moved his whole team of four reporters, camera crews etc. to Dallas expecting a “big story” that day.
The “Far Right” was stirring up trouble in Dallas they harassed Adlai Stevenson JFK’s UN Ambassador on a previous visit.