If you hear a blowout, you'll know I bumped into Gary.

4 seconds sound clip from the All Through the Night (1942) movie soundboard.

You can hear this line at 00:57:02.819 in the Blu-ray version of the movie.

Quote context

[...]

- But this don't make any sense. If she's one of this mob, why did she help us?

- This is no time for information, please. C'mon, let's get out of here.

- I think I'll take this along. It might come in handy.

- I'm gonna take a look around. Come on.

- Take a peek down there.

- If you hear a blowout, you'll know I bumped into Gary.

- A wretch of discontent and confusion.

- Do you ever look at the faces of these Americans as they read the headlines?

- Already we have split them into angry little groups flying at each other, unconscious they are doing our work.

- You will see, in a year, perhaps less than a year, they will all be taking their orders from us.

[...]