A panel of National Security experts released a report concluding that the United States seaports, among other things, are still vulnerable to a major terrorist attack. While this may be true, since over 200 million containers move through top American seaports annually and only a small number of ships and containers are actually inspected, the industry seems to be responding positively to the war on terrorism. Over 750 importers and transportation providers (Ocean, air, and rail) have signed up for the U.S. Customs Trade Partnership against Terrorism (C-TPAT) and over half of the 20 mega-ports have signed up for U.S. Custom's Container Security Initiative (CSI).