On the defense side, wearable RFID tags have enormous potential for tracking, locating and monitoring vital signs of soldiers. What is described for NASA's lunar missions applies directly to DoD's operation theaters when astronauts are replaced by soldiers. On the commercial side, the applications carry much higher volumes and are more diverse from asset tracking to instrumentation and control. Both the beacon and tag technologies are applicable. On the NASA side, primary application will be geo-positioning during lunar missions, parts tracking, and sensing. NASA places high premium on reliability and requires that systems carry built-in redundancy. The proposed RFID technology is ultra-low-cost, wearable, highly transportable and provides redundancy in case of hardware or software failure.