And if you're not one of them...

4 seconds sound clip from the Die Hard (1988) movie soundboard.

You can hear this line at 01:33:05 in the Blu-ray version of the movie.

Quote context

[...]

- Well, he might be a cop. I don't know. We're checking on that.

- One of yours?

- No. No way.

- Do you smoke?

- Yeah.

- Thanks. (3)

- You don't work for Nakatomi.

- And if you're not one of them...

- I'm a cop from New York.

- New York?

- Yeah. Got invited to the Christmas party by mistake. Who knew?

(Chuckling)

[...]