Why wasn't there a consultant from DoD on set???

As a veteran I really want to believe they thought they hired a proper consultant, preferably a retired Navy Seal, to ensure at least the correct Military vernacular, and protocols were used correctly. Because, if they believe they had hired a veteran they didn't verify he had a DD214 to make sure the Seal was legit, and they need to demand a refund for his services. Also, I blame whomever neglected to proof read the script and the producers for this mess of a movie.