Two-man rule.

- Two-man rule? - Yeah, two men, two keys, like a...

nuclear launch.

But, uh, to retrieve the keys, there is a vault.

And to open the vault, you need to enter Planck's constant.

- Planck's what? - Planck's constant.

- It's a very famous number. - All right, so we get the keys, and then we turn the machine off.

That's what he says.

All right, well, that shouldn't be too hard. We can do this.

Joyce, did you hear the part where he said the place was like an impenetrable fortress?