One of the Honolulu Police Department's (HPD) newest recruits proves you're never too old to try something new.

Meet Jonathan and Wendell Ko -- HPD's newest father and son crime-fighting duo.

Wendell might be the dad, but on the force, he's the rookie. At age 57, he decided he wanted a change.

"I was running two businesses, and after 30 years, I got tired of it, and I sat down one day and thought I got to do something better, something for the community," said Wendell.

That's when he told son Jonathan -- who's been with the department for seven years -- about his idea. He says Johnathan was a little skeptical at first.

"I had mixed feelings, because I don't want to say he's old, but someone that age you just want them to kind of settle down already and enjoy the rest without cause this job is stressful," said Johnathan.

But if there was anyone ready to jump in later in the game, it's Wendell. He's already a master spear fisherman, and worked hard to stay in shape for the academy.

"As far as the physical part, it wasn't that much of a challenge, but the mental stuff was. All the learning new laws and how applying them," Wendell said.

The hard work paid off -- Wendell graduates on Tuesday. Meaning you might see two Kos out patrolling the streets!