... because it's a construction worksite. (It's a bit more evident from the second photo in the linked post.)
Hurricane Irene Reports from the Field
If your hospital or other work location is being affected by Hurricane Irene, send me updates and photos. You can leave a comment on this article, e-mail me whatever you have, or use the Rumor Report form (which can also accept attached photos).
The Hurricane was over-hyped.