Herschel Walker signs football memorabilia for Staff Sgt. Luis Loza Gutierrez during a meet and greet session Aug. 20, 2015, at the Summer Bash sports grounds on Grand Forks Air Force Base, N.D. Walker spent the day with Airmen and was the guest speaker at the closing ceremony for the day's events. (U.S. Air Force photo/Senior Airman Desiree Economides)
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