I understanding pairing. I used to use that so thats at least normal. The funny thing was I overheard a soldier on the escalator at the airport one day say he was on at 12 month rotation. I was like thats where that comes from, its a military term.
So then I started wondering what else do we do that's adopted from the military and so I just had to ask someone: does the military only pay once a month minus a small "advance"? Is that where that came from? From what I understand, no they don't. So my quest continues to figure out who thought that was a good idea.