President Barack Obama greets service members and families Dec. 15, 2014, on Joint Base McGuire-Dix-Lakehurst, N.J. Obama expressed his gratitude for the service and sacrifice of troops and their families in the war in Afghanistan. The visit was intended to recognize the end of combat operations in Afghanistan 13 years after they began. (U.S. Air Force photo by Russ Meseroll/Released)