Rechamber

Is there any backup equipment or redundancies in place in the event that something goes wrong or stops working, or is the available space and weight restriction too limiting for such things?

Wow thank you so much for the answer, and I'm so happy that there are so many redundancies and failsafes in place. Even the alternate pathing - that's very ingenious. I really cannot wait to see the findings from this mission - you have all done a phenomenal job and should be so proud!