FBI Deputy Director Dan Bongino has reportedly turned hostile and erratic since joining the bureau, according to Tucker Carlson, who says the change traces back to the investigation into Thomas Matthew Crooks, the Trump rally shooter.

• Bongino allegedly told Carlson early on that the truth about the shooting was "ten times worse" than the public realized.
• When Carlson later obtained and verified additional footage tied to the shooter, he says Bongino and FBI leadership turned on him instead of investigating further.
• Carlson claims Bongino called him repeatedly and sent abusive texts attacking him and his late father.
• Carlson says he has directly asked Bongino what changed and gotten only hostile, profanity-laced replies.
• The episode raises questions about what, if anything, FBI leadership is withholding about the shooting.

Outlook: Expect continued public friction between Carlson and Bongino, with pressure likely to build for the FBI to clarify what it actually knows about the Crooks investigation.