children trapped inside. >> we're in the limo, and we're all dancing, having a good time. excited to go to prom. and all of a sudden, the bus slams on its brakes. i was the first person to think call 911. i stepped to the side and called 911. i was calm. >> reporter: undaunted, decked out in tuxes and gowns, the teens jumped into action. high school senior peter kim was one of the first on the scene. >> i opened up the trunk, and then the first person i saw was the -- like the 12-year-old or 11-year-old boy. i grabbed him, and then i gave him -- i set him down and told him to sit down, that he was going to be all right. >> reporter: peter seen here, carrying the youngest child, who he pulled out of the vehicle. >> she was laying there, and like it got to me a little bit because she wasn't moving at all. i saw her baby girl just laying there, and i went to go reach her, and that's when she turned around and wads like take my baby, take my baby. like take her, save her.