I can wager a guess. In the military, it was pretty common for finance to mess something up, especially around TDYs and moves between assignments. You might get

I can wager a guess. In the military, it was pretty common for finance to mess something up, especially around TDYs and moves between assignments. You might get overpaid by a few $k and only 6 months or a year later would someone notice. Of course that is a lot of money to most people, especially military folks who might make $30-50k/year and wouldn’t immediately have a few $k to give back or subsist on if a paycheck was docked.