Dissimilar air combat training ( DACT ) was introduced as a formal US air combat training during the Vietnam war, following the 9 to 1 kill ratio of North Korean MiGs over US air assets. Thus Topgun was introduced. The idea of the DACT is to place pilots in simulated aerial combat using different types of aircraft ( rather then have them using the same type ) in order to understand the value of knowing the enemy’s weak points. Here is a video of Topgun DACT featuring the US Navy F-16 Falcon versus the F-14 Tomcat . The instructors, flying the Vipers, play the role of aggressors while the students fly the Tomcats. Seems the students still have something to learn.