Reactors around the world – 55 in Japan, 103 in the US, 40 in Russia, and so on – are also vulnerable to terrorism. For example, a National Academy of Sciences report in 2005 indicated that pools holding spent fuel stored at these reactors might not withstand a determined attack. The industry is now touting – and building – “floating” nuclear power stations that would operate on barges; clearly protection of these stations would be difficult.