today is the busiest day of the year for tenton's creamery in oakland. serving up black and tan sundaes for $1.25. the line stretched around the block for this sweet deal. >> 125 years? wow. >> fenton's used to have a great crab sandwich. did you know that? >> i can only think about ice cream right now. see you back here at 6:00. captioning sponsored by cbs >> quijano: records fall as a deadly heat wave keeps its grip on much of the country. tens of millions suffer. >> hot, like it can make you sweat hot. >> quijano: with a new weather threat on the horizon-- >> it will be another night of record-breaking digits. >> quijano: also tonight, military buildup. david martin reports on u.s. plans if tensions with iran turn into a war. president trump digs in with new attacks on four democratic congresswomen of color despite charges his rhetoric is racist. no joke. a man dressed as a clown takes police on a slow-speed chase in southern california ending, where else, at the beach. and a ballerina's fight against scoliosis takes center stage. >> giving up was not