User blog comment:Fire Eater/Differences between the manga and the anime?/@comment-1037137-20180629192749/@comment-24407809-20180629203641

You're right that the Corps was probably celebrating prematurely, RuneLai, but if you consider the fact that the airship was already high above Liberio, so the only way for anyone to reach that door would be with 3DMG, I think it's plausible that the Corps would feel safe celebrating. Not to mention most of them were either fresh recruits, or transfers from the Garrison (and Hannes was a great example of how unprofessional the Garrison could be), so doing something inappropriate like that would make sense coming from them.