Yep. I'd say maybe 50% of the guys I know are in "the industry" past the two year mark. Some get called by a major, some get burned out and get a job in the states.
Then you have the older divorced guys who are here until they can't be because they are playing catch-up.
Some guys just love the work and have been here for 5+ years. Maybe not all at the same company, but doing ISR work for that long.
But hell, I think we are at over 50% turnover where I work, and out of the big companies we are one of the best paying ones. There are odd contracts here an there that pay better, but those aren't usually hiring guys without OCONUS contractor experience.