 a busy border crossing between Thailand and Malaysia. Over one and a half thousand vehicles make this crossing every day. It's a vital route for trade and tourism, but it could also be used to traffic drugs, weapons, people or even radioactive materials. Under the guidance of the IAEA, the system's officials, police officers and radiation detection experts from both countries came together to test their operating procedures. The tabletop exercise was followed by a full-scale field exercise. A truck coming from Malaysia was intercepted at the border and escorted to a customs control area in Thailand. A radiation detector and X-ray scans showed it was carrying a legal cargo. Two kinds of radioactive materials were located. Police services were contacted and authorities in the capital cities informed. Depleted uranium and radium-226 were identified. At the end of the exercise, the two sides provided feedback and recommendations. The vast majority of people who cross this border have no malicious intent, but if criminals do try to cross with nuclear materials, Malaysia and Thailand are prepared and ready to act.