Heh, good point. [Jack wouldn't have waited either, if he had any kind of power that could save anyone but himself in this situation.
He looks round at the nearby buildings assessingly.] Hate to break it to you, but I really don't think any of these buildings have what it takes, not to mention the ability to withstand the water pressure this far down. That dome cracks, we'd better hope they have some really decent forcefields they can stick up in its place!