@gerpols Not that I know off (and I'm pretty well informed). NATA has been around longer than WFTC and their pilots are better (in my own, biased, opinion) established than WFTC. So I don't think WFTC will take over their training.
However, both WFTC and NATA occasionally use instructors from the other if a student and instructor don't get a bond. One of the other's instructors might work better with that student.
@Ankit Wow, I don't know about the requirements and visas
. Maybe if you look in one of the forums about working in Nam, you might get an answer.
Blue Sky Taxi Driver