Original sentence: Poor air-to-air combat loss-exchange ratios against the smaller, more agile enemy MiGs during the early part of the Vietnam War eventually led the USAF to establish Dissimilar Air Combat Training (sometimes referred to as Red Flag) programs and the US Navy's "Top Gun" school, formerly located at Miramar Naval Air Station in California (Now a USMC Air Station).These two programs employed subsonic A-4 Skyhawk and F-5 Tiger II aircraft to mimic the performance of more maneuverable opponents like the MiG-17 and MiG-21
Edited sentence: Poor air-to-air combat loss-exchange ratios against the smaller, more agile enemy MiGs during the early part of the Vietnam War eventually led the USN to create their Navy Fighter Weapons School, also known as "Top Gun" at Miramar Naval Air Station on 03 March 1969.The USAF quickly followed with their own version, titled the Dissimilar Air Combat Training (sometimes referred to as Red Flag) program.These two programs employed subsonic A-4 Skyhawk and F-5 Tiger II, as well as the USAF F-106 Delta Dart, which mimicked the MiG-21