and an update on her cancer battle, saying she s making progress but not out of the woods yet. her plans to make a public return this weekend. president biden meeting with the pope on the sidelines of the g7. also jimmy fallon, chris rock, whoopi goldberg at the vatican for a star-studded event. california s crumbling coastline and the families who fear their homes will be washed away. and our exclusive access to the hidden secret beneath the ruins of pompeii, newly discovered after nearly 2,000 years. announcer: this is nbc nightly news with lester holt. good evening and welcome. we have made it to the end of the week, and it has been a disastrous one for millions in south florida who have been hit with relentless rain for four straight days now. a flood watch still in effect in many areas this evening after storms brought more than 20 inches of rain to the region, leaving roads underwater, cars submerged, and hundreds of homes flooded. first responders carrying