Didn't know what to make of ベターキッズ in the top right corner. One way to literally read it is "better kids" which doesn't make sense. I'm pretty sure it's supposed to be the name or model of the helicopter they're in, and the best guess I could come up with is it may be some weird spelling of Betelgeuse but I don't remember seeing anything like that in Arknights. Perhaps it was made up by the artist, I don't know.