S1·E13 A Life on the Line

Perri rescues someone from the surf, only to discover that he's an adrenaline junkie who's risked both their lives to seek attention. She's hailed as a hero but is so traumatized that she vows never to rescue anyone again. It's Matt who gives her the confidence to go back on patrol. He teaches her some self-defense techniques so she won't have to risk her own life to save someone else's.