Gouges like this aren't left by accident during an evacuation.

[Is he an expert? No. But it's just common sense if you ask him. Anyone in here during the reactor disaster would have no reason to be this high up. These marks were here deliberately, and have his mind racing with possibilities for what might actually be wrong with the tank here.]

I can bring that slate up here if you want to look more closely.

[It's easier to manage carrying a tiny datapad with clumsy flight than an entire princess would be.]