RISE RAPIDLY. THAT'S COMING UP. >>> ROBIN, NOW WE GO TO THAT BREATHTAKING RESCUE. AN AMERICAN SYNCHRONIZED SWIMMER LOSING CONSCIOUSNESS IN THE MIDDLE OF A COMPETITION AND SINKING TO THE BOTTOM OF THE POOL. T.J. HOLMES IS BACK WITH THE STORY AND, T.J., WE'RE HEARING FROM THE COACH WHO JUMPED IN TO SAVE THE SWIMMER. >> ONE OF THESE STORIES WHERE I NEED TO FEEL LIKE SHE'S OKAY. THESE IMAGES ARE SO JARRING AND CONCERNING YOU NEED TO KNOW SHE IS ALL RIGHT BUT, YES, SHE WAS COMPETING, 25-YEAR-OLD SWIMMER IN A SOLO ROUTINE SO SHE WAS IN THE POOL BY HERSELF AT THE TIME. LOSES CONSCIOUSNESS, HER COACH JUMPS IN TO SAVE HER AND HER COACH SAYS SHE BELIEVES THAT SWIMMER MIGHT HAVE BEEN NOT BREATHING FOR TWO MINUTES. NEW IMAGES THIS MORNING OF THE TERRIFYING MOMENTS FOR AN AMERICAN SWIMMER. ANITA ALVAREZ COMPETING IN BUDAPEST IN ARTISTIC SWIMMING LOST CONSCIOUSNESS AND SANK TO THE BOTTOM OF THE POOL. OVERNIGHT "GMA" SPOKE EXCLUSIVELY TO HER COACH ANDREA FUENTES WHO JUMPED IN TO SAVE HER. >> UNTIL I REACH HER UNDERWATER. >> Reporter: YOU CAN SEE HER DRAGGING ALVAREZ TO THE SURFACE WHERE SHE WASN'T INITIALLY BREATHING. ANOTHER SWIMMER PREPARING TO COMPETE JUMPED IN AND HELPED HER. >> WHEN YOU FINISH, YOU REALLY WANT TO BREATHE BECAUSE YOU HOLD YOUR BREATH FOR A LONG TIME AND THE FIRST THING YOU WANT TO DO IS BREATHE. AND I THOUGHT SHE WAS GOING DOWN, SO I WAS LIKE IMMEDIATELY KNEW THAT SOMETHING WAS HAPPENING SO I WENT AS FAR AS I COULD AND I REACH HER AND GRAB HER TO THE SURFACE AND TRIED TO MAKE HER BREATHE. >> Reporter: SHE ADMINISTERED CPR UNTIL MEDICS AND THE TEAM DOCTOR TOOK OVER. >> HEART RATE FINE, PRESSURE FINE, OXYGEN, FLEW COAST SO I KNEW SHE WAS OKAY. WE PRESS HARD ON THE NAIL THAT CREATES -- VERY PAINFUL BUT IT CREATES ADRENALINE FOR YOU TO WAKE UP SO SHE WOKE UP LIKE, WHAT. >> Reporter: ARTISTIC SWIMMING REQUIRES HOLDING YOUR BREATH FOR LONG PERIODS OF TIME. >> THE SPORT IS EXTREMELY HARD. SOMETIMES PEOPLE PASS OUT. OUR JOB IS TO DISCOVER OUR LIMITS, THAT'S WHAT WE DO. >> YOU ALL, THIS IS NOT UNCOMMON IN THIS SPORT. YOU'RE TALKING ABOUT HOLDING YOUR BREATH FOR 20 OR 30 SECONDS AT A TIME BUT COMPARE IT TO THIS, HOLD IT BUT RUN A 100 TO 200-YARD SPRINT. THAT'S WHAT THEY'RE DOING DOWN THERE DURING SYNCHRONIZED SWIMMING. THE YOUNG LADY IS FINE AND SHE DID THIS LAST YEAR IN A COMPETITION, LOST CONSCIOUSNESS, THE SAME YOUNG LADY DID THIS AND RIGHT NOW SHE'S BEING EVALUATED. SHE WANTS TO COMPETE IN THE TEAM EVENT IN A COUPLE OF