Port Dawgs off the chain
Staff Sgt. Preston Harris and Staff Sgt. Travis Thomas, 89th Aerial Port Squadron aircraft specialists, chain down a generator to the floor of a C-17 Globemaster III at Joint Base Andrews, Md., April 15, 2015. Aircraft specialists crisscross chains with hooks to secure cargo and ensure flight safety. (U.S. Air Force photo/Airman 1st Class Philip Bryant)

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