"Then you have chosen death. Thank you for the meal" The overseer said with an intellect it had yet to display.

The Tyranids outside swarmed across the Nexus in seconds tearing holes in the walls and swarming inside killing all in their path.

In orbit the fleet pulled out from the planet slightly so as to not be caught in a possible blast.

((Your World is terra formed up the ass for the Tyranids to eat not to mention it's pumping toxic into the air with each second. You should have just left.))