Jason's question of "What could be strong enough to leave claw marks in solid steel?" echoes Elisa's question "What could be strong enough to leave claw marks in solid stone?" from "Awakening, Part 1".
Goliath: She lives, thanks to you.
Elisa: CPR, the gift that keeps on giving.
Demona: They've hunted me for ten centuries. It's time to put an end to it.
Lexington: Those three are immortal, like you?
Demona: No. The vendetta passes from generation to generation. They wiped out the last gargoyle clan in Scotland, and for a thousand years they've hunted me. Why, I have no idea.
Goliath: I do not want escape. I want vengeance.
Demona: Perhaps you can have a little of both.
Goliath: There's no such thing as a little vengeance.
Demona: At last, you're thinking like a true gargoyle.
Demona: Vengeance will be ours, I promise you that. But it must wait.
Goliath: I will not wait.
Demona: I have waited a thousand years. You can wait two more nights.
A deleted scene from the episode shows the hatch door from the Hunter's Airship, nearly landing on Vinnie.