I had no idea it had been on this long. 10 seasons is impressive.

https://ew.com/tv/cbs-hawaii-five-0-ending/

“This show has been pretty much every waking moment for the last 10 years of my life,” star Alex O’Loughlin said in a statement. “Everywhere I go on this planet, in every language, I am McGarrett to all these people. What we’ve done, what we’ve accomplished, it’s extraordinary. I can’t really put words to express my level of gratitude. I’m just glad to have been a part of this, a part of history, and I’m going to miss it. And to the fans, I don’t know how to thank you guys. Thank you for following us the way you have. I’m going to miss you. Aloha.”

O'Loughlin and Scott Caan have been with the series since the start (Grace Park and Daniel Dae Kim left after season 7), while Ian Anthony Dale, Meaghan Rath, Beulah Loale, Katrina Law, and Chi McBride have joined the cast in subsequent years.