We never had any intentions of starting a war. So we never assumed anyone would start one against us.

The altitude had been more for seclusion than defense. Temples were places of spiritual retreat, where Air Nomads could reflect on the things they learned in their travels through the material world, and restore their connection to the realm of the immaterial.

"Brother?" she called, as they entered the temple. It was always quiet in the temple, but now the quiet suggested emptiness, rather than just tranquility. "Aang, are you here?"

I don't think he's here.