will remain under iraqi control? >> i am brianna. the best units that exist, i'm not being facetious, the iraqi military has superb fighting units. they are concentrated in and around baghdad. i mean that has to be held at all costs. i would say that baghdad is in good shape. its surroundings are fine. they understand what the defense of baghdad needs to look like. it is a defense that's in layers. baghdad is okay. the challenge is as bob has described, it's the sunni heartland and the only one showing up in combat right now are the shia qods force, badder corps, the militia being supplied by tehran. that's the most troubling aspect we see is a broader intergenerational sectarian fight we're watching unfold. >> what of this idea bob, of forward air support. what is that and is that