Now, we've plotted every possible course his plane might have taken, and the only appreciable landmass he could have overflown at the time was Midway.

8 seconds sound clip from the Midway (1976) movie soundboard.

You can hear this line at 00:19:10.241 in the Blu-ray version of the movie.

Quote context

[...]

- Now, our listening posts have been picking up lot of traffic between Yamamoto's flag commanders.

- There has been a very heavy volume of traffic, sir, with recurrent references to Objective AF and... What was it?

- AO.

- AO. Yeah.

- AO is still a mystery, Admiral, maybe a diversion. But I think we've identified Objective AF. It's Midway.

- Now, it had us really stymied there, until one of my men remembered an enemy intercept we decoded last March.

- Now, a Jap reconnaissance pilot radioed his base that he's passing close to AF.

- Now, we've plotted every possible course his plane might have taken, and the only appreciable landmass he could have overflown at the time was Midway.

- Joe!

- I know it's thin.

- Thin? Damn near invisible!

- But I figured out a way to confirm it, sir.

- Now, if you'll have this flown to Midway. It's a fake message, Admiral, reporting that Midway's freshwater condenser's broken down.

- Now, it should be transmitted in the clear, so there can't be any question about Japanese operators getting every word of it.

[...]