I added Scree to the janitor position. Rather than him being picked up later, it just occurred to me that he could have already been picked up by the ship on the way to the planet we departed from. He was just hiding or trapped somewhere in the underbelly of the ship while we were busy with our going away party and our crew isn't completely settled yet so could have missed his location. I imagine him panicking as the ship takes damage and he thinks it's an earthquake.