The clip Secrets of Arrakis Part 2 from Dune (1984)
I suspect an incredible secret has been kept on this planet,
that the Fremen exist in vast numbers...
and it is they who control Arrakis.
Each trooper will be charged with responsibility...
for preserving water.
Our existence as an operating army...
depends on these following water-saving procedures.
Remember, water is life.
Why is the shield not yet up?
Sir, we found and removed another sabotage device.
I think it'll go up now, sir.
...armed forces prospects for rehabilitation are good.
We're finding these sabotage devices too easily.
House shield activating.