Background story: "After the large scale engagement in Crescent Bay Incident and the retrieve of the enemy's XR-1 fighter's wreckage, the ??? Air Force found that neither the original F-113 nor the AFX-201HX will not be able to get a upper hand during combat with the XR-1, especially in high altitude. So they developed the AFX-2253-G. A variant of AFX-2253-G with forward swept wings for combat and air superiority has already been deployed soon afterwards. The AFX-2253-G can fly up to 4.66 mach and 80,000 feet. It can even intercept SR-71 and MiG-31. However, its stability in ultra -high altitude is still not enough. "So, I have already made a large number of change in the AFX-2253 series and it is one of it. Try it and feel free to leave your comment.