Though an unlocked door may appear inviting, it would also be too easy an entry and it might well be wired to alert the perpetrators or booby-trapped. The team always erred on the side of caution, especially in situations involving human life. As another precaution, suction-cup microphones were affixed to windows to pick up any conversations from the kidnappers inside or other sounds that might affect their plans. No unusual sounds were detected and the team decided to proceed. A specific series of clicks on the radios signaled ‘go’.
