If you blink, you just might miss it.

"It's Always Sunny in Philadelphia" paid a subtle tribute to a fallen New Jersey trooper in a recent episode – a move that the New Jersey State Police called "well played" in a Facebook post on Friday.

In "A Cricket's Tale," episode nine of the 12th season of the show that aired March 1, there's a photo of Trooper Sean Cullen placed in Paddy's Pub.