joining know new is the former inspector general of the nstb. our military analyst. and in washington, peter golz, a specialist in aviation and international crisis management. also joining us is david soucie, cnn aviation analyst. appreciate all of you being with us. david, we were just hearing from noah schneider about the crash scene. from what he said, in terms of trying to, trying to investigate this, what challenges lay ahead? this really isn't just one crime scene, this is multiple crime scenes spread out over a great distance. >> yes, it is. documenting it is a challenge just when it's a singular accident but now you've got several different things that have to be treated as accident sites. if bodies are falling separately, those have to be documented as well, what tract tra jektry the object that hit