How is “move out” used?

In Avengers: Age of Ultron (2015), one line is: “We gotta move out. Even I can tell the air is getting thin.”

Which movie is “move out” from?

The clip at the top of this page is from Avengers: Age of Ultron (2015).

(of a group, often soldiers) to leave a place and start going; an order to depart now; to leave your old home

Editorial60% of films
(of a group, often soldiers) to leave a place and start going; an order to depart now
Oxford35% of films
to leave your old home

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

We gotta move out. Even I can tell the air is getting thin.

Said in 8 films · #1