If you saw 2 passengers get off then there was 1 too many on the aircraft. The flight finally left with 167 out of 168 seats occupied. It seems that one person that got on the flight didn't have their boarding pass scanned, creating a seat dupe that wasn't discovered until the flight was moving. As has been pointed out, everyone was screened so nothing concerning there. At least it wasn't like the PIA flight where the crew decided to have 2 passengers sit in the lav for the flight because the rest of the seats were full! (
http://news.hamaraphotos.com/ians/pi...o-instead.html )