They offered a 25% increase, to "GO TO AFGHANISTAN". Moral questions aside, that is a normal job to job bonus. Not a sell your soul bonus.

You can make 100k a year in Food Service, working at Taco Bell on base in Afganistan. The risk isn't great, but it is a real and present danger when you work in a war zone on a base that might be attacked.

It seems like a 250% increase would be required to get anyone to move.