Cung Le has been wanting to get this film made since 2009 according to his interviews back then, and he described the script as 'First Blood' meets 'No Country for Old Men'.
Major Griggs: [Speaking unofficially to Sgt. Mitchell on John Nguyen]
Army never should have let him out in the world the way they did. They treated him like surplus equipment, like a car more expensive to repair than replace.