Landing signal officer (center) aboard the Navy Hospital Ship Repose off Vietnam directs a U.S. Marine Helo bringing battle casualties to the "Angel of the Orient." [Helicopters.][Hospital ships. Transport of sick and wounded.][Scene.] Repose (AH-16) VietnamVNT-16324-F-10-67; By JOC Robert D. Moeser, U.S. Navy Medicine Historical Files Collection - Hospital Ship series.
Original public domain image from Flickr