engine throttle and gliding, the YF-19 then appears in the skies above Guld and the two old friends reconcile. When discovering that Myung's life is in danger, Isamu and Guld quickly go to her aid. While Isamu goes after Sharon, Guld fights the X-9 and ultimately destroys it by removing the gravitational safety limiters on his aircraft, and matching the X-9's velocity/maneuverability, which is much higher than normally possible due to it being computer-controlled and having no pilot, until he achieves a target lock and shoots the X-9 down. However, removing the limiters allows Guld to achieve accelerations exceeding human (even Zentradi-Human) limitations, which ultimately leads to his death, the g-forces generated by his piloting literally crushing him even as he crashes the YF-21 into the X-9, destroying it. While fighting the SDF-1 Macross, Sharon hypnotises Yang who shoots at Isamu but only hits his helmet. Isamu ejected Yang but then is hypnotized by Sharon's voice, and is left to crash to his death. At the last second, Myung's voice reaches him and brings him out back to consciousness. Dodging the Macross' fire, Isamu is able to destroy the central computer, effectively eliminating Sharon. The story ends as the sun rises over the Macross Fortress, with Myung waving to Isamu, who has survived the destruction of Sharon's computer. Eventually, the U.N. government banned all AI technology developments after the incident, and allowed the continuation of Project Super Nova. Production Following Big West's 1992 release of Macross II (which was subsequently retconned as an alternate universe title), original Macross staff member Shōji Kawamori began work on a true sequel to the original Macross series. To realistically depict the intense flight scenes in the anime, Kawamori – along with action choreographer and animator Ichiro Itano and other staff members – traveled to Edwards Air Force Base (which was the basis for New Edwards Air Force Base on planet Eden in the series) in Edwards, California, for a few training sessions with dogfighting school Air Combat USA. The Advanced Tactical Fighter program of the 1980s was the basis of the Project Supernova contest between the YF-19 and YF-21. Consequently, the YF-21's design was heavily influenced by the Northrop YF-23 while the YF-19 resembles the Grumman X-29 when in jet mode. The design of Eden City was influenced by the San Francisco landscape (which also served as a backdrop for Frontier City in Macross