One of the biggest challenges is that this is a major event—it's a huge event involving a lot of people. In addition, it takes place in a complicated urban environment. Most winter games are not held in major urban centres like Vancouver. That, in and of itself, is a challenge.
Another big challenge is that we're running two separate footprints. They are connected by the Sea-to-Sky Highway, but the Sea-to-Sky Highway could in theory be closed. You can only get a helicopter up through that area 30% of the time. So we're running two separate footprints, and you have to build the capacity in each of those footprints to deal with whatever you worry about. That has been a major challenge.
I don't know whether you two want to add anything.