Sheryl Sandberg, the chief operating officer of Facebook, chats with cadets on the stage at Arnold Hall Nov. 6, 2015. Sandberg was at the Air Force Academy to discuss Lean-In Circles, a peer networking program she created that is being used by the Defense Department. (U.S. Air Force photo/Liz Copan)
                
                    
                        PHOTO BY:
                        Liz Copan
                    
                    
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