P.I.X.A.L./Seymour Skinner, Wu/Duggee and others in “Unfinished Business”

I'm reading Zane's signal aboard that rocket ship, along with four other lifeforms.

Oh, by the grace of the First Spinjitzu Master.

You wanted them to take risks. To see how far they'd go. Is this what you had in mind? How far? How far must they go?

[looks up at the rocket launching into space; hopefully] Come back safe to us, ninja. Come back safe.