Donnie Wahlberg pays tribute to Tom Selleck as 'Blue Bloods' ends ...

Dec. 14 (UPI) -- Donnie Wahlberg paid tribute to Tom Selleck on Instagram as their family cop drama Blue Bloods wrapped up its 14-season run on CBS Friday.

"Fourteen years of calling this man my cast mate, my commissioner, my friend and -- whether it was on screen or off -- calling him DAD! It's been an honor, my dear friend," Wahlberg wrote.