Kadena Airmen visit Iwo To
Airman 1st Class Sean McDonough, 390th Intelligence Squadron signal intelligence analyst, explores a cave that was used by Japanese troops during the battle of Iwo Jima, Jan. 8, 2015, at Iwo To, Japan. Japanese forces dug more than 7 miles of interconnected tunnels and used them as a primary defense against the Americans. (U.S. Air Force photo by Airman 1st Class John Linzmeier)

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Photo by: Airman st Class John Linzmeier  |  VIRIN: 150108-F-GR156-349.JPG