"The Gold Lifesaving Medal or the Silver Lifesaving Medal may be awarded to any person who rescues or endeavors to rescue any other person from drowning, shipwreck, or other perils of the water. The rescue or attempted rescue must either take place in waters within the U.S. or subject to the jurisdiction thereof, or one or the other of the parties must be a citizen of the U.S. or from a vessel or aircraft owned or operated by citizens of the U.S."