...when you leave the country's (perhaps continent's) largest airport at around 22:30. There are another two scheduled international flights leaving at roughly the same time, a total of about 500 SLF going toward air-side.
There are 2 (TWO) passport control officers on duty. When they have processed about 300 of the pax, a third officer comes on duty. When asked why there are only 3 officers, the answer is "I was phoned about an hour ago (on my day off) to come in and work. Dunno where the people who are supposed to be on duty are..."