Oliver Stark and Aisha Hinds at the "Sound The Alarm" Campaign in Cabrillo High School on May 11, 2019 in Long Beach, California.

We've added screenshots from Episode 17, "Careful What You Wish For," of Season 2 of 9-1-1.

We've added screenshots from Episode 16, "Bobby Begins Again," of Season 2 of 9-1-1.

We've added screenshots from Episode 15, "Ocean's 9-1-1," of Season 2 of 9-1-1.

The actor on eating mostly fruit and training like a firefighter.

We've added screenshots from Episode 14, "Broken," of Season 2 of 9-1-1.

We've added screenshots from Episode 13, "Fight or Flight," of Season 2 of 9-1-1.

Oliver Stark had no idea what he was getting himself into when he signed up for 9-1-1.

Oliver Stark on the success of 9-1-1 and embracing his birthmark.