My guess:
1. The Pentagon was testing some new laser-based anti drone weapon
2. The Pentagon did not inform Sean Duffy or the FAA via the proper channels or set up the test in a “competent” manner
3. Duffy blew his top (already mad at the Pentagon over the DCA heli crash) and overreacted
4. Duffy did not implement the TFR in a competent manner
5. Everyone and their mama (concerned citizens, press, Gov. Abbott, state/Congressional legislators and Senators, local authorities) called The White House and asked “WTF ARE YOU DOING???”
6. Trump told Duffy/Hegseth et al to TACO.
7. TFR was lifted.
In short, this Administration is not competent and we’d be fools to trust them to keep our skies safe.