themselves for maximum safety in the in-person classrooms. that's the most important thing you can do and make sure if they have children 12 or older right now. please get them vaccinated. the next month, two months, three months we'll see vaccinations available for children of all ages. that will be a good thing also. the more people vaccinated, the more safe we'll be. >> speaking of shots, a lot of hopes are being penned on the booster shots. it's unlikely moderna will meet the september 20th deadline. there's new warnings that the white house needs to slow down that program all together. why the delay and concern over a booster shot? should the public be alarmed or be reassured by a cautious approach? >> there's been a lot of confusion in the messaging that's coming out of the federal government with people in the