The FBI Recovered 3 Remote Bomb Devices, how did Crooks parents not know? How did the FBI not know?

The FBI Recovered 3 Remote Bomb Devices — Two in his Vehicle and One in his Home

• Wray described these devices as semi-sophisticated, but crude

• Crooks was found with a transmitter on his body after he was shot
—— he says if Crooks tried to detonate those devices on the roof, it would not have worked.

https://rumble.com/v589n3p-the-fbi-recovered-3-remote-bomb-devices-two-in-his-vehicle-and-one-in-his-h.html