How is “sound off” used?

In Avatar: The Way of Water (2022), one line is: “Zdinarsik, you copy? WAINFLEET: Sound off!”

Which movie is “sound off” from?

The clip at the top of this page is from Avatar: The Way of Water (2022).

Zdinarsik, you copy? WAINFLEET: Sound off!

7 作品で登場 · 1 本目

to call out your name, location, or status so others know you are present or all right; to express your opinions loudly or in an aggressive way

くだけた · 非難 · 7 本の映画に登場

編集映画の 60%
to call out your name, location, or status so others know you are present or all right
Zdinarsik, you copy? WAINFLEET: Sound off!
Sound off when your name is called.
オックスフォード映画の 40%
to express your opinions loudly or in an aggressive way
Don't sound off on me. I'll...
and Lola gets a chance to sound off...

定義：Oxford Advanced Learner's Dictionary 第 9 版