 Prince Roger, his staff, the marines and the navy personnel attached all have nannites floating around in their blood stream whose function is to enhance the person's regenerative capabilities (even a lost limb, though this takes a metabolic toll on the body), process alien nutrients into something human anatomy can use, increase the body's endurance and protect against disease and foreign toxins.The marines also have nanotech recording devices used in an intelligence gathering function.These devices are the size of a small insect and can move like one so as to look innocuous.