Nuclear power plants will soon be required to defend against bigger, more capable groups of attackers, but Congressional auditors said Tuesday that it would be years before the Nuclear Regulatory Commission would know if the plants meet the requirements. The commission has been ordering changes since the Sept. 11 attacks, and in April 2003 it published requirements, which take effect next month, for how many attackers a plant must be prepared to repel, and what training, weapons and tactics it should employ. The commission required plant owners to submit plans on how they would comply.Full Story