 So they have metal detectors, magnometers, that you walk through to make sure that you're not carrying any prohibited items as you go into the rally. And he doesn't want to go through the metal detector. He's kind of dancing around. He's kind of moving around. And it catches the attention of the people doing the screening. His name is Thomas Matthew Crooks. And the FBI says that they believe he had bomb-making materials inside of his car as he drove to the rally on Saturday.