What is the author's style in Die Trying by Lee Child?

The language of the novel is simple English. The novel does not include any foreign phrases and little slang. Most of the characters in the novel are highly educated, therefore most of the language in the novel is precise, if not scholastic. Other characters in the novel are less educated, but their language is still more precise than might be expected. The novel includes a lot of language that is common among military personnel because several of the characters are either members of the military, retired members of the military, or people who admire members of the military and seek to emulate them.