activation, there's been no deployment orders. it's difficult to tell how soon this would happen. frankly, a lot of this is going to depend on what mr. putin does or doesn't do, kate. if there's another incursion into the ukraine, certainly, i would believe could drive nato and other allies to make posture decisions that they haven't made yet. >> 85% u.s. military personnel on heightened alert. is this the ceiling of military personnel that the administration will be committing to this conflict, do you see? >> what we're talking about today is about 8500 on heightened alert, but as i said yesterday, we're certainly not going to rule out other options. we provide options to the president, the commander in chief and we're going to continue to do that. and so i would, i certainly would not rule out the possibility that we could be putting additional forces on heightened alert in the coming days and weeks and maybe even moving troops around europe that are already there to bolster and to reassure some of our allies