The damage is too extensive!
Area 51 has been marked for cleanup.
Nod and GDI at the beginning of the incursion fight each other inside Area 51. GDI was attempting to get some flight suits into a vault. This then turned like Time Travel along with Red Alert 1, Generals and Red Alert 2 into some of the timelines. It was an attempt to change time at the height of wars in the Command & Conquer series into their original timelines.