I generally like to think I'm a rather calm individual. It takes quite a bit to get me flustered. But let me tell you, I have had a couple of FBI agents show u

I generally like to think I'm a rather calm individual. It takes quite a bit to get me flustered. But let me tell you, I have had a couple of FBI agents show up at my door. And when I saw those badges, even though I know I've not done anything, I was nervous. Had a legit adrenaline dump. All because my address was the last known address of someone they wanted to speak with. This someone was male, brown hair, about the same height and build as me, etc. As soon as they noticed the similarities, it was not a "sit down in front of your computer and straighten this out" kind of situation. They are there for a reason - to find a criminal. They aren't there to shoot the shit with you and explain "it's all just a big misunderstanding". If the FBI shows up at your door without a warrant, don't let them in and don't speak to them. If they insist, insist on having a lawyer present. Luckily my situation ended up OK. I got a lawyer who specifically had experience with federal law enforcement and had them do all the "straightening up of the situation". But it cost me money and took weeks of what should have been "here is my driver's license, passport, and deed. I am me, not the other guy".