National Security is an entertaining mixed bag. Martin Lawrence is either chuckle-worthy or obnoxious, and the comedy overall either lands or misfires. Luckily it's paced well, Zahn and Lawrence have good chemistry, it has a funny soundtrack and the performances are overall adequate. The story is nothing special, the racial humor occasionally falls flat and National Security doesn't leave a big impression on the buddy-cop genre, but it's disposable fun nonetheless and serviceable if there's nothing else to watch. There are far worse movies to kill time with.