on the United States Naval Air Station Bermuda were destroyed, but the tough building standards and the heavy masonry or concrete construction of buildings outside of the US bases meant that only a small number of houses experienced severe damage during the storm's passage. Bermudian roofs are constructed from heavy limestone slates. Bermudian houses are generally windproof, but are vulnerable to roof damage when the outside air pressure drops in the eye of a cyclonic storm and the expanding air inside a sealed house lifts the roof. The heavy limestone roofs are not easily moved, and are designed to shed slates, opening only a small breach instead of losing the entire roof. As a hurricane approaches, Bermudians close windows and storm shutters on the windward side but leave the leeward side windows open, allowing interior air pressure to rapidly equalise with the exterior without damage to the roof. As Bermudians would normally stay at home during a hurricane, once the storm centre had passed over, they would open the previously windward windows and close those on the opposite side (there is also a considerable difference in exterior air pressure between the windward and leeward sides of a house during a storm). As few were at home when the storm struck, and most had left all of their windows closed and locked, a great many homes suffered minor roof damage in the form of lost slates. This caused considerable difficulty as there were not enough roofers and not enough ready slate to quickly repair the damage, and also not enough tarpaulins either already in possession of home owners are in stock at hardware stores and supplies had to be specially flown in. Hurricane Emily, which Bermudians dubbed "The B****h that came to breakfast", caused $50 million in damage to the island, though no one was killed. About 230 buildings lost their roofs and 16 people were injured due to winds gusting in excess of . The local airport was shut down as a large portion of its roof was blown off during the storm. Several cars and boats were flipped by the storm and a cruise ship carrying 700 people slipped from its moorings. Before the storm's landfall, officials in Bermuda cut power to roughly 90% of the island to protect the power grid. There were also unconfirmed reports of tornadoes associated with the storm. Emily was the strongest hurricane to