One of the most striking elements of the Bowe Bergdahl affair is word that top Army officers were so anxious to keep the matter a secret that they directed Bergdahl's fellow soldiers to sign a pledge of silence about his 2009 decision to walk away from duty in Afghanistan. "Many of Bergdahl's fellow troops…signed nondisclosure agreements agreeing to never share any information about Bergdahl's disappearance and the efforts to recapture him," wrote CNN's Jake Tapper, who first reported the agreements last Sunday. Now, with Bergdahl back in U.S. hands, many of those former soldiers are ignoring the agreement they signed....