Uploading the virus

Astigi Flashfire Campaign- Astigi- Narbon City- Day 1- A highly trained Stygian operative lands in Narbon city in a escape pod as other assault craft make planetfall on the planets surface.  The Stygian agent has received training from both the Dark Mechanicus and the Alpha Legion overlords of the empire.  He quickly takes out a handful of guards and adepts and uploads a scrapcode virus into the planetary defense network.  Defensive AA sites suddenly are robbed of power while some silos fire their missiles as their hatches close destroying the batteries.  One battery of anti ship missiles fires not on the "Oni" but rather the small city of Hastori which vanishes along with it's 80,000 residents in a mushroom cloud.