safe in a place like afghanistan, where people can relax. they can laugh. they can get some exercise. and enjoy the fresh air. and instead, what we're hearing is that it was somebody with a suicide vest who detonated it on a sidewalk and turning that fun event into a scene of absolute terror, as people were running roadway, those injured, again, 16 service members, two u.s. service members killed, two contractors killed, as well. and a lot of questions now about how this could have happened. >> what are the natives saying about it? >> reporter: so, there's a statement just out from the native secretary general saying, quote, my thoughts go to the loved ones of those killed at bagram airfield and to the wounded. nato stands with afghanistan in the fight against terror. these attacks, while rare, are not unprecedented. you'll remember a couple of years back in helmand province at camp bastian, taliban gun fighters were able to get on to an airfield and were running gun