I grew up with race cars, and I've worked in the engine building world for a bit. I now work in computer security, it does a lot better than just pay the bills. I still love fast cars and bikes. I also spent 20 years in the Air Force doing a wide variety of things involving nuclear forensics. So, I've learned about vacuum, pressure, nuclear physics, seismology, and spent thousands of hours airborne. So, yeah, I've done a few things here and there.