to kiribati. some things need no translation. country's first ever medal. >> it's over, the first gold for brazil, it's gold for silva. >> reporter: hometown favorite rafaela silva, rising from poverty to the podium, a chinese gymnast falling to her knees. joy and relief. still for all those dreams fulfilled -- >> that right there is an olympic gold medal winning moment. >> reporter: others are quickly dashed. here in ri w rushmore of modern sport. >> here's bolt, he makes it look easy. >> ledecky is a gold medallist. >> reporter: cementing their legacies. >> "superman" is finally hanging up his cape. >> where redemption was sought and history is made. >> peter alexander, nbc news, rio. >> so much fun, that is going to do it for 8:00, 7:00 central, and usain bolt goes for the gold again in the relay. i'm lester holt, for all of us at nbc news, thank you for watching >>> detectives three-day a bold armed robber charges with at least nine holdups. the connection he has to a las vegas city council man. >> his name is shane ross. he