mark barnacle john capehart as well, general, talk about the fight against isis knocked groups oak, the bombs from above. what's going on? >> i think the general who oversees this is to keep the different lines of effort ongoing for our nation moving forward at about the same pace there is a train and equip force on the ground and there is of course a diplomatic effort. the intent is to keep it all in balance and not create more opportunity for more dissension on the ground. >> you have a lot of people that said you couldn't win the wars from above. what's the situation if isis? against isis? how much damage can we do to isis. at what point are there limits to air power? >> i think a lot of damage is done. they're fought able to mass and move forward as they were if you remember last summer and early fall. they're not able to put forces