On a Florida launchpad that has been dormant for almost two decades, a new, roughly 320-foot (98-meter) rocket — developed by Jeff Bezos’ company Blue Origin — is poised for its maiden flight.

Steve Bannon, an ex-White House strategist and MAGA media star, retaliated with a threat on his War Room podcast to “rip (Musk’s) face off” on New Year’s Eve, warning the tycoon not to “go to the ...