american or other afghan officials, government officials, when that suicide bomber drove a motorcycle in amongst them and blew himself up, killing those six and wounding three others. the entire mission is still under investigation but it appears that those six u.s. airmen were involved in some kind of operation involving a meeting between u.s. and afghan leaders just outside bagram air base there northeast of kabul. >> nbc news chief pentagon correspondent jim miklaszewski, thank you. for more on the fight against isis let's bring in steve clemens, washington editor at large at the atlantic and msnbc contributor. steve, good to have you with us. as jim was just mentioning there, iraqi forces making a push to try to retake the capital of anbar province, ra