Okay.

[Maybe he doesn't have any solid reasons to trust Daryl, but the man is too certain to be doubted. Pavel gives the tablet one last tap. There's a soft woosh and then...

Nothing. No groans, no scratching, just the complete silence of a vacuum on the other side of the secured door.]

There. I would wait two, three minutes. If they are unaffected by the sudden pressure change, they will freeze.