“The U.S. Nuclear Regulatory Commission has made available to the public an unclassified version of an annual report to Congress outlining the previous year’s security inspection program. The report is required under the Energy Policy Act of 2005. The report covers the security inspection program, including force-on-force exercises, for commercial power reactors and certain fuel cycle facilities for calendar year 2006. According to the report, the NRC conducted 298 security inspections at commercial power reactors, of which 21 were force-on-force inspections, employing a well-trained mock adversary force to test a facility’s ability to respond to the level of threat the facility is required to defend against. There were 73 inspection findings from these reviews, of which 67 were of very low security significance and 6 were of low to moderate security significance.”