Area 51 Easter Egg - Airplane Referance

OK, first off goto the mission where you are at the fake moon landing.
>-< then go get one battery and slaughter all life around you (except your life)
>-< put a battery in and kill the new people that show up.
>-<sit on top of the fake landing ship thingi (i forgot the name for it) and then wait.
>-< towards the end of the looping backround sounds of people giving commands, a voice says "i forgot my line" or something like that, wait a few seconds (just before it replays everything) and you will hear him say "rodger rodger over, whats your vector victor?"
___ and there you have it. a classic referance to airplane.
apparently a programmer liked the movie and thought it would be funny. or something of that sort, who could possibly know.