Ports often play a key role in goods transport operations and/or are located near to urban centres. Originating with the air strikes on the " Twin Towers " in New-York, on 11 September 2001, the " International Ship & Port Facility Security Code " (ISPS) code seeks to prevent attacks using a vessel as a potential weapon of mass destruction, with all the serious implications that has for the transport system and the local community. Anxious to protect itself against this rise in terrorism, Europe has also adopted several tough laws: