The New York Times is reporting that EWR (Newark Airport) was closed for a short time today due to a fire on the roof of the airport's new administration building, which is currently under construction. This bulding is apparently located "several miles" from the main terminals. EWR's ARFF equipment was used to extinguish the blaze, which then, under FAR Part 139, meant the airport had to discontinue operations (due to no accident response capability). The fire occurred around 1:00 PM local.
Info stolen from nytimes.com.
Tom in NO (at MSY)
PS: Questions for the EWR spotters: where exactly on the airport is the new administration building?