It certainly does, but as Chadzat said, in the big scheme of things the numbers will be insignificant.
Last time REX embarked on this crusade they virtually scoured the Earth. They even went to Eastern Europe! The result: 5 south Africans. Good guys and good operators all, but did they save REX? Nope! The GFC saved REX.
As jibba jabba says, beware airline management bearing gifts. The SA guys were unique in they came over to provide a safer life for their families. To the best of my knowledge, no such entrenched danger exists in th US.
It's just a sideshow.