South Korea
I've spent over 15 years in aviation security — as an instructor, researcher, and professor at Hanseo University in Korea. Most X-ray training tells screeners what to look for. I teach them how to look. I created a visual e-book series on X-ray image interpretation — designed for airport security screeners, customs officers, and aviation security professionals who want to sharpen their detection skills fast. 📘 My books are used by security professionals across Korea and now available worldwide. 👉 Get my X-ray interpretation e-book: https://xraypark.gumroad.com/l/rkyfql