Character mistake: The Admiral refers to Top Gun as Maverick's final post. As Maverick is a Naval aviator, it should be referred to as his final duty station. The army uses the term post.
Character mistake: Phoenix says Hangman is the only active-duty pilot in the Navy with a confirmed kill, but she is wrong because Maverick has 3 confirmed kills and is still an active-duty Navy pilot, even though he has been flying test aircraft. (00:25:10)
Suggested correction: She says, "you are looking at the only naval aviator on active duty with a confirmed air-to-air kill." She isn't wrong. Maverick was not an active-duty navy aviator since three years before that moment and would not become one until near the end of the film, i.e, a week later. Second, films are allowed to show characters that make in-universe mistakes. She corrects herself near the end of the film at 1:58:20, saying Maverick is an active-duty navy pilot with five kills.