National guard would also either have the aforementioned augments or have gas masks. Atmospheric nanites would attempt to de-escalate the virus' spread. Captured zombies would be sent to military bases nearby, where the virus couldn't be spread. The guard would also face slight problems from the increased groups of zombies, with the increased need of killing them.
The asteroids would never even make it to the planet, as they would be shot down due to the recent increases in planetary defense.
[that even stems back to when redwood and vonihove were starting out, so]
[though i guess i can let a couple slip past]