Halfway to the Primarch after you recruit Garrus, you will witness it eventually succumb and disappear over the horizon of the moon as it loses stability, followed by a massive explosion spreading out from where you lose sight of it. One significant example is during Priority: Palaven, if you pay attention you will see a turian space ship in the distance desperately unleashing a constant barrage of heavy fire for an extended period of time while you go about your business. From fighter jets engaged in air combat to heavy machine gun nests. There are a dozen different stories happening all over in the distance, with most of them ending violently.

Pay attention around you during massive battles such as the start of the invasion on earth, the moon on Palaven and the war on Thessia.