Thomas Crooks visited the shooting range days before the assassination attempt

A classmate in the target practice says he fears that could have been Crooks “pushed over the edge” listening to the right-wing instructor ranting about how Trump was the best man for the White House.

Bill Jenkins, who spoke to the FBI, told media: “I was right there with the evil. I haven’t been able to sleep thinking about it.”

Crooks is said to have shown his skills during a training session where he used his weapon to blow a large hole in a shooting target with a volley of precision bullets.

The gunman raised concerns among some of those who encountered him ahead of the Trump rally in Pennsylvania.

Jenkins said Crooks remained reserved during a political conversation with others at the shooting range, possibly indicating his internal dissatisfaction with the content of the conversation.