 FACT: During both the training missions and dogfight scenes, the  sound effects for the targeting system and the radar/missile warning  are nearly identical. In reality, those two sounds would be  completely different so as to give the pilot no doubt as to whats  going on (as evidenced when Maverick appears confused when he hears  a "lock on" tone when Jester "kills" him while Mavericks chasing  Viper).