I consider everyone that I work with (small state gov. agency) a "valuable human being", regardless of what they do (or don't do). And I am the person responsible for seeing that our employees are evacuated.

In cases where limited evacuation is the only alternative, I have adopted the philosophy espoused by Roger Moore's character in the movie "ffolkes" (aka "North Sea Hijack" and "Assault Force") - the youngest ones go first, the older ones have had their chance.