Complex sentence: Alerted to the meteorite, the military arrives and captures Susan who is given the code name "Ginormica" and sent to a top-secret secure facility headed by General W.R. Monger.
Split into simpler sentences: Alerted to the meteorite, the military arrives and captures Susan. She is given the code name "Ginormica" and sent to a top-secret secure facility headed by General W.R. Monger.