I would also add that in the event of having to descend from a height, they do have an emergency fall protection system built into their gear that the Centurion troops discovered works for when they need to soften a landing from a tall building. Might be faster than using ropes, but accomplish the same thing. That is in addition to other emergency systems for loss of gravity, loss of atmosphere and so forth, inherent to a habitat station. None of these technologies are tuned to their full potential, the Grathik cranked them out with the idea that they needed to adapt these systems to where the Human troops are, not to where they could be if they trained. But humans are adaptable, and so they probably learned about this equipment and have already started to pick up a few tricks. Like the emergency landing system.