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1st Lt. Ralph Andrew Carios, 535th Airlift Squadron pilot, receives a challenge coin from Taylor Fravel, Massachusetts Institute of Technology Security Studies Program Arthur and Ruth Sloan professor of Political Science director, during a base tour at Joint Base Pearl Harbor-Hickam, Hawaii, March 23, 2022. Students toured a C-17 Globemaster III static display and met with Air Force crew members to learn more about the aircraft’s mission and the Airmen it takes to get the mission done. (U.S. Air Force photo by 1st Lt. Benjamin Aronson)