A thriller; felt like I was reading a screenplay. Characters were interesting and the locations clearly described. The science fiction aspects were glossed over, but the rest of the facts were solid (though sometimes overused and repeated - mostly details of Navy Seals and medical details of combat). The torture scene towards the end of the book was completely gratuitous, and the villain was fairly two dimensional.

I understand this was written from an idea handed to the author. What could have been a Twilight Zone episode or B-movie turned out quite a bit better - well done.