Sergeant Kevin Briggs is a California Highway Patrol officer who has stopped upwards of two hundred people from jumping off of the Golden Gate Bridge into San Francisco Bay.
I interviewed this remarkable man known as the Guardian of Golden Gate. It's quite a long read (15 mins or so) and this is my personal site but here's the interview:
http://www.getinspired365.com/articles/the-guardian-of-golden-gate
If you'd prefer to just watch his TED talk it is here - https://www.ted.com/talks/kevin_briggs_the_bridge_between_suicide_and_life
Thanks!