I think one of my concerns about this job is due to the opaque nature of it. i.e you don't know the true nature of the job until you do it.
I'm concerned about sleep patterns. I like my sleep, one of my fave vices it is. I'm alarmed by the idea of doing this job slightly sleepy or with a bit of the cold.
Today I have a bit of a cold in my head so it's affecting my work a bit (plus it's friday) as an ATCO what would the consequencies be I wonder.