Saw a video on youtube where a guy who does work on diesel trucks in his garage for friends and family. Makes a little bit of money and makes videos showing how to do it. One day he gets a knock at the door and it's a police officer and a Homeland Security agent. They want to talk to him about his recent internet purchase of a large quantity of "suppressor parts". He said he had made no such purchase. They then showed him copies of his orders from a diesel supply house. He had ordered a bunch of large diesel filters. He had also, on another day, ordered a sight for a rifle. They put two and two together and came up with dangerous person. He said they seemed to believe him and left but he doesn't know if he's in the clear or what. 2 simple, legal transactions and Big Brother came to the door. Not sure how I feel about that. Seems oppressive but then everybody always asks, "Why didn't anyone find out about him before he killed 50 people?"