They're bluffing, but keep your head down.
4 seconds sound clip from the Dr. No movie soundboard.
You can hear this line at 01:06:01 in the Blu-ray version of the movie.
Quote context
[...]
- That's a high-powered boat. Take some cover. Come on!
- They're here, all right. Okay, folks. Come out and you won't get hurt.
- Stand up and show yourselves or we'll be forced to open fire!
- Come on out! We know you're there! We've been expecting you.
- Just walk out with your hands up and you'll be okay. This is your last chance.
- They're bluffing, but keep your head down.
- All right! You've been warned! This is it!
- Lie still. It won't last long. They don't really know we're here.
- Fire!
[...]