In the X-Men: Apocalypse movie, when Stryker captures some mutants (Mystique, Hank and don't remember who else) along with Moira and takes them with him in his chopper they are kept in a cabin (within the chopper) where they can't use their mutant powers. In an attempt to rescue them Jean, Nightcrawler and Scott teleport inside that cabin and get stuck as now even they can't use their powers.
But later, somehow these three get out of the cabin and are not part of the prisoners Stryker has kept in his cell. How do Jean, Nightcrawler and Scott escape from Stryker’s chopper?
I know Jean can control the guards' minds and prevent the guards from noticing them but since she can't use her powers within this chopper cabin, I assumed when the chopper lands and they open the cabin, Stryker and his guards should have noticed these extra mutants (though this scene where they land the chopper and open the cabin is not shown in the movie).