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Created page with "{{Infobox character |name = John Walker |image = |aka = U.S. Agent }} '''John F. Walker''' is a discharged United States Army officer who served as the second Captain America appointed by the United States. He served as a captain in the 75th Ranger Regiment and is the first person to receive the Medal of Honor three times. Walker graduated from the United States Military Academy in 2009 and the Massachusetts Institute of Technology in 2013. He fought in the War in Afgha..."