Factual error: Cheryl works in the Navy Exchange bookstore. In the United States Military(all branches of service) ONLY civilian employees work in the military exchanges, which are small retail stores for military and their family members.
In the scene where Antwone is in Cmdr. Davenport's office and he is wearing the black, long sleeve shirt and tie, he has mysteriously been promoted from E-1 to E-4. He had never reached that rank anytime in the movie.