The zero-G window washers on board all the other ships on a 5-year deep space voyage...
are they redshirts, blueshirts or private contractors?
Probably they just regularly go to a star cruiser wash site on Rigel VII
I always wondered about the enlisted crew that are on janitorial duty. Someone has to go around vacuuming the rugs in the corridors and wiping down the touch screens. Who goes and unplugs the toilets? On that point, how do Trek toilets work? Do the toilets use reverse-replicator technology?
I think they've mastered space roombas.