Complex sentence: A few months later, the embittered survivor decides to take action and exact revenge; his target is the pilot of an AC. That pilot is simply known as "Hustler One", and he pilots the AC around which events on that tragic day played out.
Split into simpler sentences: A few months later, the embittered survivor decides to take action and exact revenge. His target is the pilot of an AC. That pilot is simply known as "Hustler One", and he pilots the AC around which events on that tragic day played out.