NFL legend Herschel Walker visits Wilford Hall
Herschel Walker, center, signs an autograph for Tech. Sgt. Christopher Barker, 59th Medical Wing Patient Squadron, and his father Daniel Barker during a recent visit to the Wilford Hall Ambulatory Surgical Center Oct. 23, 2013, at Joint Base San Antonio-Lackland, Texas. Earlier in the day, Barker was presented with the distinguished Purple Heart for wounds sustained in action. (U.S. Air Force photo/Staff Sgt. Jerilyn Quintanilla)