My rating is really 3.5 stars...
Story was entertaining, except the part where Jack deals with his antagonist, which seemed uncharacteristic with Jack character.
Liked the hints of romance that never bloomed, because not every story should lead straight to sex between main characters. Kudos to author, script writers and director.
Appreciated the acting quality of all the characters, both protagonists and antagonists. There were only two obvious places where acting skills and line delivery were soft (end of junky-interrogation scene & street conversation in New Orleans between antagonists was dubbed over).
The motel scene between main protaganists about parenthood and gender issues was intriguing (neither women nor men are more or less suited for parenthood).
Perhaps the paternity issue was not fully resolved, neither genetically nor metaphorically, although certainly a Storge bond was formed.
Characterizes DoD contractors as money-grabbing, murderous, war-mongers...again. Seems like a tired-out story mechanism, although I do realize this IS a story about military-people (both present and former as protagonists and antagonists). Having the military itself be the antagonist would be equally trite/cliche'. How about a "few bad actors secretly" being the bad guys within either the DoD or support contractors rather than the organizations themselves? Ya, that's been overdone too.
There were some scene-to-scene transitions that lacked clarity/linearity as to how the characters got from there to here. Indeed, some books seem to suffer more than others during the transition from text to motion picture, in order to keep the time short for the film.