When Exercise Builder Nuclear was first discussed as a concept in the spring of 2012, Don Hanlon, ORAU EBN project manager, did not fully realize the extent to which the platform would come to support national nuclear security. Today, EBN supports more than 53% of the nuclear industry with its nuclear security drills and exercises and is being offered in web and mobile app formats. EBN is an online platform used by emergency preparedness managers in the nuclear power industry to manage the many drills and exercises required by the Nuclear Regulatory Commission to prepare plants to meet any type of threat.