Sounds interesting and should be recognizable and interesting to many people given the visibility to this type of thing from the recent tragic events in Fallujah.
Those events actually inspired a change or two. i first wanted the son to be a CIA officer, but then I got to liking the idea of a contrast between the "modern" concept of a merc as an employee of a security corporation vs. the "old school" Dog Of War represented by the father.
I'm also going to toss in some humor as well. anyone who's been in the military for a while will tell you that there's no shortage of things to laugh at, and I like that style.
I absolutely devour books by guys like Carl Hiassen and Tim Dorsey for that reason...cutting, black humor runs throughout their work. it's like soice on the cake, to me.