"Sink or Swim" is the second episode of the third season of 9-1-1, and the thirtieth episode overall. It aired on September 30, 2019.
A massive tsunami hits the Santa Monica Pier, placing Buck and Christopher's lives in danger.
- The character Lena Bosko, portrayed by special guest star Ronda Rousey, made her debut in this episode.
Buck Saves Christopher From Drowning In The Flood Season 3 Ep. 2 9-1-1
Chimney Asks Maddie For Help Season 3 Ep. 2 9-1-1
Buck Saves Christopher From Drowning Season 3 Ep. 2 9-1-1
Athena Tells Everyone Help Won't Be Coming Season 3 Ep. 2 9-1-1
Buck Watches Firefighters Help A Man Season 3 Ep. 2 9-1-1