I warned them to be ready if they have to evacuate.
4 seconds sound clip from the The War of the Worlds (1953) movie soundboard.
You can hear this line at 00:26:40 in the DVD version of the movie.
Quote context
[...]
- There's one, there's the other.
- Here we are right between them.
- I warned them to be ready if they have to evacuate.
- I just came to tell you everyone has been alerted.
- General Mann. I was told to expect you, sir. I'm Colonel Heffner.
- I haven't seen you since Oak Ridge.
[...]