Bullets don’t work.
Your training won’t work: trusting the Chain of Command; the Table of Organisation; Command and Control; Intel won’t work because Command ordered Intel to interpret data in the old way: to defend against Earth’s erstwhile apex predator - Command’s peers. By the time undeniable proof arrived with Command and rejection proved futile, leadership was down to a single madman shrieking ancient truths over all remaining channels. But all of our ancestors survived the fledgling enemy so long ago - at least to the age of parenthood. Trust to Whom your ancestors prayed and follow Its Commandments.