A C-17 Globemaster III from the 313th Airlift Squadron prepares for take off during a training mission in Puerto Rico, Feb. 8. Two separate slates of readiness exercises were run through two C-17 Globemaster air crews who utilized the island’s remote location and relative lack of familiar infrastructure to simulate operations in a deployed environment. (U.S. Air Force Reserve photo by Master Sgt. Robert Tingle)

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Photo by: SSgt. Daniel Liddicoet |  VIRIN: 190301-F-IM770-005.JPG