keep them disbursed in anticipation of a u.s. attack but the pentagon says u.s. military officials say they can deal with that. they will keep reprogramming the targets into the missiles ready to go whenever president obama orders a strike. that is what the u.s. military will tell congress today. carol? >> is it possible to completely hide, let's say, the chemical weapons that are in syria? >> well, you raise a very good point. the two biggies, if you will, the chemical stockpiles, will the u.s. know exactly where those are? they don't want to hit the chemical agents because that could disburse into the atmosphere and cause a real catastrophe so they've got to keep on top of that. they are worried that they will know where all of that is. and, of course, the other issue, as this retargeting happens, human shields, civilian casualties. they need to make sure as much as they can that they will not inadvertently strike any target