I was told, when you get to your facility the shifts will be changing in the same way, they start it at the Academy to get you used to it. in Vegas they do a Day shift one week the swing the next. I have heard that the schedules are set 28 days in advance so you know what to plan for but I also know that the Ramp Controllers at LAS bid for shifts six months at a time. Not sure how the Towers will do it but it can't be that different, I imagine.