Complex sentence: After Sheridan is taken from the galaxy by Lorien, Garibaldi makes one last trip to Babylon 5, for the shutdown ceremony, and takes a piece of the station with him before leaving for the last time.
Split into simpler sentences: After Sheridan is taken from the galaxy by Lorien, Garibaldi makes one last trip to Babylon 5. He is there for the shutdown ceremony, and takes a piece of Babylon 5 with him before leaving for the last time.