Had Susan Rice just googled Sgt Bergdahl prior to her Sunday morning show, she would have seen (and maybe read?) the Rolling Stone June 2012 (two years ago!) article in which it is described how Sgt Bergdahl walked away from his post.
She might not have said this to ABC George Stephanopoulos:
Susan Rice: “….Well, George, this is a very special situation. Sgt Bergdahl wasn’t simply a hostage, he was an American prisoner of war, captured on the battlefield…”