 The then-glazed-over threats are now a focus of the FBI investigation, especially considering how closely the plan mirrors the attack he launched on the Trump campaign rally. Investigators later found explosive devices in his car, which was parked not far from the grounds where the rally took place. Crooks was 15 years old when he made the threats back in 2019, the same year his image was noticeably absent from the high school's yearbook. Oh, boy.