"That's another thing we have in our defence, there's plenty of water on the planet." so that's what planetary defence people do :D since it's unrealistic to p

"That's another thing we have in our defence, there's plenty of water on the planet." so that's what planetary defence people do :D since it's unrealistic to prepare to defend the planet actually, let's just point at things :D and call them out for being in our defence! :D we have mountains too! they are also in our defence!