circulation and hepa filters and so forth, we can do this safely. but you got to start out of the block strong, and alabama, for instance, we had 30% of all of our school systems starting with a mask mandate. that was a month ago we went back to school. we now have 90% with a mask mandate because masking works. if you don't have masking you're going to have a problem. >> grateful for your time and insights, grateful for your emphasis on the key point. the cdc director saying today, three times more covid cases in places that are not masking their children in schools than places that do mask their children at school. as we have learned, selling mask and vaccine mandates is a giant political challenge. our cnn ssrs poll asked if vaccine mandates for every day activities, going to work, going to school, attending a sporting event or concert is than acceptable way to boost vaccinations or do you view it as an unacceptable infringement on your personal rights. take a look at this, the country is split.