Harvard grad Gabby Thomas aims to help fix racial disparities in health care — and win gold at Tokyo Olympics

Dashing down the final steps of the 200-meter race in first place, Gabby Thomas raised her arms. She knew she had  just become an Olympian on Team USA. 

"It has been a dream of mine for a very long time now," the 24-year-old said in an interview with CBS News this week. "It's such a long journey, and so many days and hours of mental and physical preparation. And it just all came together in that one moment."  Thomas recorded a blazing time of 21.61 seconds, the second fastest time ever for the women's 200-meter dash in the world. She said she was "mind-blown to see" her time only trailed sprinting legend Florence Griffith-Joyner by less than .3 of a second and was actually faster than that of Marion Jones, another track icon.