Master Sgt. Bryan Boyd, 356th Airlift Squadron load master, shows Kelly Kamiya and Karizza Cruz the different chains that are used to tie down cargo during a walk-through tour of a C-5M Super Galaxy aircraft Dec. 18, 2017 at Joint Base San Antonio-Lackland, Texas. The visitors also toured the C-5 flight simulator at the 733rd Training Squadron. (U.S. Air Force photo by Benjamin Faske)

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Photo by: Benjamin Faske |  VIRIN: 171218-F-ST721-005.JPG