. >> dickerson: we'll talk with jeh johnson about what those consequences could be. and as americans hit the road and the skies for summer travel, we'll talk with united airlines c.e.o. scott kirby about the industry's recovery. then, after two decades, the u.s. military presence in afghanistan is nearing its end. we'll have a report from kabul. and finally, a look to the heavens, where billionaires are engaged in a space race. it is all just ahead on "face the nation." ♪ ♪ >> dickerson: good morning. and welcome to "face the nation." more than 151 million american adults are fully vaccinated. but just under a third american adults have not had even a single shot, which is worrisome to health officials. the delta variant makes up more than half of all of the new cases. and there is now confusion over the role of the booster shot. we begin with dr. anthony fauci. >> doctor: good morning, john. >> dickerson: let's talk about the delta variant. it seems to make the case for vaccination mor affective, with those that are unvaccinated the most getting infected. is it

anthony fauci the nation's top infectious disease expert, former homeland security secretary jeh johnson and scott dean. if you can't watch us live, set your d.v.r. so you can watch us later, that's tonight's "cbs evening news." norah will be back monday. i'm major garrett. have a great weekend, and good night. captioning - [narrator] the following program is a paid advertisement for nuwave oxypure smart air purifier, sponsored by nuwave llc. featuring deborah norville. an award winning journalist and new york times best-selling author. deborah is here today to share her passion for the nuwave oxypure. - we've been living through strange and unsettling times. never in history has everyone on the planet been confronted by the same thing. and we're still trying to get back to a sense of normalcy. we've discovered how devastating a virus can be and the importance of proper cleaning. well, coming up, we'll learn about the nuwave oxypure air purifier and hear from an expert who says this isn't just an air purifier, but an important tool to protect your family so you can breathe easier - [narr

anthony fauci the nation's top infectious disease expert, former homeland security secretary jeh johnson and the c.e.o. of united airlines, scott kirby. if you can't watch us live, set your dvr so you can watch us later, that's tonight's "cbs evening news." norah will be back on monday. i'm major garrett. have a great weekend, and good nigh >>> right now at 7:00 -- >> breaking news in the south bay. a child hit by a car, critically hurt, between two schools. what a witness told us minutes ago. >> it seems like consistently there's more higher temperatures going on. >>> a brutal heat wave baking much of the bay area and state, and if you thought it was bad today, just wait. >> heat wave is going to intensify for inland portions of the bay area tomorrow. i'm tracking the advisories and warnings in effect through the weekend. >>> a stage one power grid emergency has been called. we break down what it means and when we could potentially see rolling blackouts, coming. >>> after more than 100 aftershocks in the sierra, quake experts are telling us our focus should actually be closer to the bay