"If Aegon and Daenerys wanted to attack the North, they would have done so already. I suspect they want to deal with the Lannisters before looking our way. We're not even officially at war yet, and they might attempt to negotiate again. It would take them at least two moons to move their armies from the Red Fork to the Neck. And we've been building scorpions for the last moon for that exact purpose, Lord Hand," Jon replied with a heavy sigh. Scorpions would not truly be able to pierce a grown dragon's scales from afar, but a lucky shot through the eye could easily take one down. "Daenerys" dragons are far from grown enough to be able to melt stone. And guardsmen and archers were already instructed to aim for the leathery wings. They are far more vulnerable than the scales. Once dragons cannot fly anymore, it is far easier to deal with them."