behind one of the most iconic movie themes of all time announcer: this is nbc nightly news with lester holt. good evening ancient history is facing an immediate and uncertain future tonight in one of the most cherished slices of america a wildfire roaring through parts of california s yosemite park, threatening hundreds of giant sequoias some more than 2,000 years old. tonight crews literally using a network of sprinklers to create humidity around the towering trees to give them a fighting chance. remarkable imagery revealing the spread and intensity of the fire, which doubled in size over the weekend. the fire fueled by the severe drought now affecting over 97% of california, along with extreme heat which is not just making things difficult in the west, but extending all the way to the gulf coast, leaving 36 million under heat alerts. miguel almaguer is in the fire zone tonight with late details. reporter: exploding in size again overnight, yosemite s washburn fire i
is going to do a lot more for those children than just allowing them to not be vaccinated and rely on natural antibodies as it were. they are expecting in the next maybe, sounds like they have a lot of questions right now. maybe it s going to be a half hour to an hour before they wrap up. take that vote, and then move that recommendation on to the cdc director who is expected to accept their recommendation and then cities like new york will begin to deliver shots into arms as soon as next wednesday. these are two different vaccines, moderna and pfizer, slightly different regimes for both. the moderna is a two-shot regime, the pfizer is a three-shot regime. they are much smaller doses than those for kids or adults or older kids and adults, and they ve really gone through all of the process of how the vaccines will get from the manufacturers to the various places to put them into arms and they expect that they will start all next week. back to you. miguel marquez, thank you s
years looking out for the kids in her community. reporter: at age 70, robin borlando came out of retirement this summer hoping to save some young lives. don t play on the ropes, baby. reporter: a mother of three, grandmother of six, answering philadelphia s plea for lifeguards to open public swimming pools and help people kids off the streets. i was a lifeguard when i was 16 and loved it i decided to finally to do something for our kids, our community. they re killing our kids they have no place to go the pools are closed all around reporter: here in philadelphia, at least 100 children, 17 and younger, have been shot so far this year. i live in the house with my family, and we hear about 14 shots. reporter: including just steps from her front door. and it was three young boys that were shot and killed. when you see it, it s scary, and it s very sad.
super hot. sweltering is the better word, right. all right, allison chinchar, thank you so much. summer plans at pools or beaches could be in trouble. where people like to cool off with heat like this, and you want to know why, because there aren t enough life guards. the american life guard association says about a third of the nation s public pools will not open this summer because of staffing shortages. cnn s vanessa yurkevich looks at philadelphia s struggle to attract summer workers. reporter: had you ever been a life guard before? i was a life guard when i was 16. reporter: how long ago was that? i m 70 now. reporter: this summer, robin borlando is taking the plunge, getting back in the pool in the plunge to be a life guard, 54 years later. i want to do something to feel worthwhile, a purpose or something. reporter: she found-calling after she heard the philadelphia parks and recreation department
how do you think it s going to be different this time around? well, i m hoping that being a mother and a grandmother, i m hoping i m a little wiser now and that s what i want to bring, just natural, just that warmth, but don t test me, though. reporter: vanessa yurkevich, cnn, philadelphia. wow, that robin, pretty amazing. what is typically a funny segment on the late show with stephen colbert ended with an arrest this week. members of the production team that shoot segments for triumph the insult comic dog were arrested by u.s. capitol police and charged with unlawful entry. according to cbs, the shoot was prearranged and authorized, and after completing interviews in some of the congressional members offices, the crew was getting additional footage in the hallways when capitol police detained them. and if you re not familiar with the triumph the insult comic dog, here s a sample of one of