>The airplane is what enabled delivery of both nuclear bombs, as well as atrocities against the population in Vietnam and Syria.

And if used long enough, will allow for rapid regional/global transmission of an epidemic/pandemic. The World of Warcraft 'Corrupted Blood incident' is actually a virtual example of this that shows just how quickly something highly contagious could spread in the real world https://en.wikipedia.org/wiki/Corrupted_Blood_incident .

But at the same time it allows things like getting medical diagnostic agents that have a usable life of a day or less to get where they need to be, donor organs to be moved quickly to recipients, etc.