HTF,
I don't see how it is suspicious. I didn't mean it to sound like that. I saw that FC flights operate into Al Kharj quite frequently. Not having heard of the airfield, I ran a search to find out more in formation. I learnt that it was a military run airfield, and found the following BBC article.
BBC Al Kharj
I just wandered if FECA flies there to bring some supplies.
Cheers
CC