U.S. Air Force Staff Sgt. Christopher Stecker, 20th Equipment Maintenance Squadron munitions controller, leads a discussion on the philosophy of superheroes at Shaw Air Force Base, S.C., March 14, 2017. The discussion lasted two and a half hours and was focused on the ideas of good, evil and objective morality. (U.S. Air Force photo by Airman 1st Class Destinee Sweeney)
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