As soon as each transport is loaded, evacuation control will give clearance for immediate launch. Right, sir.
8 seconds sound clip from the Star Wars: Episode V - The Empire Strikes Back movie soundboard.
You can hear this line at 00:21:24 in the Blu-ray version of the movie.
Quote context
[...]
- And I'm sure Skywalker is with them.
- Set your course for the Hoth system.
- General Veers, prepare your men. Admiral...
- Groups 7 and 10 will stay behind to fly the speeders.
- All right! That's it. Try it.
- Oh! Turn it off! Turn it off! Turn it off!
- Sir, it will take quite a while to evacuate the T-47s.
[...]
