that the personnel involved took extraordinary care in tracking the militants that they had come underattack from. as you know this is originally an afghan unit that came in contact with taliban and required back-up from a marine unit. that unit came in and over the next several hours beat back this attack. killing several dozen taliban in the process. and required some close-air support to ultimately prevail. so i think as was noted in the reports that have come out preliminary about the investigation, that there were some problems with some tactics, techniques and procedures, or the way in which close-air support was supposed to have executed in this case. such that at least with one of the aircraft involved, the b-1 bomber, that plane because of how it takes its bombing routes. had to break away from the target to make its elongated approach. that is sort of the fundamental complaint that was rendered by this investigation. but i think they found in numbers of the taliban killed and civilians that perished in this attack, is similar to some afghan defense officials believe are accurate. b