thanks so much for watching. we will be back here at 6:00. >> the cbs we ♪ ♪ ♪ captioning sponsored by cbs >> diaz: tonight, the delta variant runs rampant. infections roar back to their highest numbers in six months. this as hundreds of thousands of bikers ride and rev up in crowded sturgis, south dakota. cbs news is there. >> reporter: more than half a million bikers are expected to roll into sturgis. some are already here. but the fear is some may roll out with covid. >> diaz: also tonight, a perfect storm of heat, drought, and wind fuels wildfires in the west. in the destruction, a race to rescue an escaped and burned bear cub. plus, the latest legal troubles for embattled new york governor andrew cuomo. >> i'm the county sheriff. i'm not going to be intimidated. i'm not going to be coerced. >> diaz: the senate goes into