And so they start to build this wall to protect themselves, which the Spartans already are not so happy about. Now the other thing that the Athenians do, they continue to build up their naval power. They see, hey, this is a very useful thing. They start connecting with a bunch of allies around the Aegean, some on islands, some on the coast of Anatolia over here. And they meet on the island of Delos, which you can't see here, it's a very small island. And they all agree to contribute their shared navies and to contribute money in order to continue to fight off the Persians, wherever they are. You know, these Persians did this injustice to us, now let's go on the offensive.