No one ever seems to ask that question.
We have found out that only 4,000 of those flown out are Americans.
Not a very large percentage have been Americans, from what I gather. It would be interesting to hear the exact number.
I'm not sure if they are hiding the number of Americans left over there or are just totally inept. I would think that there must be some record of in-country ex-pats. Surely the companies hiring them must have payroll records, or visas or a list for insurance if they get killed, or something. Generally you get paid a premium for the number of days in-country, so there must be some pretty tight travel records. I just can't imagine that you go in & out without any record or without being on some list.