Every millisecond counts: the technology that clocks races
![Every millisecond counts: the technology that clocks races](https://ktvz.b-cdn.net/2021/08/OZONE_CLOSEFINISHES_1920x1080_1930123331648-1440x810.jpg)
NBC Olympics
At the Olympics, dreams of gold can be realized or dashed by a single millisecond. Sam Brock looks at the advanced technology that’s deciding the closest of finishes in track and swimming.