It's busy at Hornet Stadium as the USA Track and Field Championships kick into high gear with the prelims of the 100, 400 and 800 meter races today.

Allyson Felix is back in town for the 100 meter dash. She last wowed a local crowd of fans -- and family -- at the 2004 Olympic Trials. Her aunt lives in Elk Grove.

Sanya Richards-Ross will take to the track for one full lap in a crowded field.

We'll also see women's triple jump and javelin. And later tonight, the men's and women's 10,000 meter runs will take place.

Aaron Braun says he's felt good in training. His personal best is 27:41 for the 25 laps.