Its clear for me - Christopher is absolutelly dilettante.
Yes, its true, CsW (like all police or military dogs) were trained to tracing and catch the people. BUT, and its the difference between reality and legends, which belive Christopher, such dog mustn't kill the people, because police or army need the people alive. They dont need kill only, the priority are the informations (because they need destroy whole organisation and not only catch and kill one man). I must say, that I never heard about any case, that on border in past kill the dog somebody.
Christoper, dont belive the fairy tales or action movies, its not reality !!! 