you've been calling for more testing and more at-home testing for a year. what does a half billion rapid at-home tests being sent out mean if they're delivered sometime in january? >> to me it represents forward momentum and forward motion from the administration to start taking testing as a public health tool in this pandemic seriously. i think 500 million tests spread out over a few months is not going to make a major dent, but if it's just spread out over everyone in the u.s. my hope is the tests will be used strategically, something we haven't done yet in this pandemic, is really create a testing strategy. if we dorks then we can make a relatively small number of tests, just over one per person in the u.s., go a much further way if we use them in very specific approaches or with very