I went ahead and researched the accident and could not find any Blackwater fixed wing accident in 2008... So I am not sure of this.
Also... I have been doing my research on working in Afghanistan. So it looks like if you worked for Flight Works, you would have to pay U.S. taxes since the most you would be over seas would be 180 days in a year. Also, I am not sure if I am interpreting this correctly but it seems to me that anyone who made more than $1,846.00 would have to pay 20% Afghan tax. And damn... That really makes a big difference.
There has to be some expat pilot on here that knows more about this...