WEBVTT MORE THAN 30 PEOPLE HAVE JUMPED TO THEIR DEATHS HERE IN THE LAST 15 YEARS. >> 911, WHAT IS THE NATURE OF YOUR EMERGENCY? >> THIS GUY'S SITTING ON WALL AND HIS FEET ARE ON OTHER SIDE OF WALL. >> WHEN IT HAPPENS, 911 DISPATCH SPRINGS INTO ACTION. >> HELLO, CALLER. DO YOU SEE THE PERSON OUTSIDE OF THE VEHICLE? >> TAMMY SEBASTIAN AND HER COUSIN HEADED SOUTH ON THE HOAN BRIDGE LAST WHEN THEY MADE ONE TUESDAY OF THOSE CALLS. >> THEY'RE ON THE OUTSIDE OF THE BARRICADES. >> ANNOUNCER YOU'RE DRIVING BY SO FAST, YOU JUST NOTICE A HUMAN BEING NOT ON THE RIGHT SIDE OF THIS BRIDGE, AND YOU'RE WORRIED. MY COUSIN TOLD ME, NO, THAT'S A JUMPER. AND I SAID, HOW DO YOU KNOW HE'S NOT JUST HAVING CAR TROUBLE? >> SUICIDES ARE RARELY REPORTED ON THE NEWS TO PREVENT COPYCATS , SO SEBASTIAN DIDN'T KNOW THAT PERSON SHE TRIED TO HELP FINALLY JUMPED TO HER DEATH. SHE WAS 21. >> I GOT TO GO HOME AND TELL MY COUSIN. THAT'S HORRIBLE I GOT TO TELL HIM HE WAS RIGHT. >> SINCE 2000, MORE THAN 30 PEOPLE HAVE JUMPED TO THEIR DEATHS HERE. IN 2010, MILWAUKEE'S SHERIFF ASKED THE STATE TO ADD SUICIDE BARRIERS DURING THE BRIDGE'S RECONSTRUCTION. THE DOT DECLINED, CITING A LACK OF CONFIDENCE THAT ANY PHYSICAL BARRIER ACTUALLY WORKS AS AN EFFECTIVE DETERRENT. BUT SCIENTIFIC RESEARCH SUGGESTS THE DOT WAS WRONG. PSYCHIATRIST DR. CARLYLE CHAN RESEARCHES SUICIDE AT THE MEDICAL COLLEGE OF WISCONSIN. HE SAYS SUICIDE IS AN IMPULSIVE ACT AND WHEN PREVENTED MAY NEVER BE REPEATED. A STUDY OF MORE THAN 500 PEOPL WHO TRIED, BUT FAILED TO JUMP OFF SAN FRANCISCO'S GOLDEN GATE BRIDGE FOUND VERY FEW ATTEMPTED SUICIDE AGAIN. 90% OF THE PEOPLE WERE STILL ALIVE UP TO 30 YEARS AFTER THE THING OR HAD DIED OF NATURAL CAUSES. IN FACT, AFTER MORE THAN 1500 SUICIDES THERE CALIFORNIA , INSTALLED CRISIS HOTLINE PHONES AND IS NOW SPENDING $76 MILLION TO HANG SUICIDE PREVENTION NETTING ALONG THE BRIDGE. >> THAT MAKES ME REALLY, REALLY SAD. >> TAMMY SEBASTIAN MOURNS FOR THE WOMAN SHE TRIED TO HELP ON THE HOAN. SHE'S A GRIEF COUNSELOR AND HELPS PEOPLE WITH DEPRESSION FOR A LIVING. SHE BELIEVES THERE NEED TO BE BARRIERS ON THIS BRIDGE. >> IT PASSES.