11B20:
U.S. Army UH-1D Huey helicopter near Hongchon, Gangwon Province, near the Korean DMZ, 1963.
11B20:
U.S. Army CH-21 Piasecki/Boeing-Vertol Workhorse/Shawnee heavy lift helicopter in Hongchon, Gangwon Province, Korea, near the DMZ, ca. 1963.