Editor: The article is great! All we need now is a quote from social media and we can publish.
Journalist: We haven't been able to find anything suitable, everyone thinks this story is satire.
Editor: Then just post one yourself and then quote that! But don't reference your name, that'll be a dead giveaway.
Trebuchets aren't really a tool for defence. They have tremendous range and aren't exactly speedy to load, aim, and launch.
Unless you meant defence in the same way that a country's military operations are known as "defence forces" regardless of intent, in which case carry on.