While we're talking about that alert, there's an "Easter Egg" in there for anyone to find.
After the alert is done, but before the timer for forced exit runs out, go to the place on the map (it's really just the Vibora Bay Map with a section walled off) where the glowing portal is for the Powerhouse.
You'll notice it's actually active and you can go through it.
This is the one place in the game where you can find THE ORIGINAL version of the Powerhouse. It's actually not as nice as the newer version. But it's interesting for historical comparison. It's a pretty straightforward, no frills thing compared to what we have now. But aside from no theater, PVP arena, or costume change area, it has all the same equipment and rooms.
So what happens if you exit the normal way? Well - you wind up in Vibora Bay. The real one. There are actually two versions - the 20-25 level version and the 35-40 version. Which one you get may depend on your level, but don't quote me on that. It's been awhile since I checked. But if you're running a pre-level 20 character, be CAREFUL about visiting the rest of the map. You might get a nasty surprise. REALLY nasty if you wind up in the 35-40 version of the map. Just saying.