[Yep, another guy with a high tech prosthetic is kind of interesting. But spirit stuff first.]

Did you listen to the welcome message on your tablet? It should tell you about the spirits. This is one of them.

[The spirit sings a questioning note, and the Soldier tries Morse, pulling out a knife to tap a quick message: He is new. Please forgive rudeness.

This time the song the spirit makes sounds amused, and then whistles Morse back. The Soldier relaxes a little, replies briefly with a farewell, and the tall spirit drifts back into the trees.]

Anyone with a mask like that is a spirit. Even tiny ones that look like insects. Some of them are hostile. Some are not.