HTS acquired RSI in 2020. RSI was founded in 2007 by David "Smitty" Smith and Bill Elhoff to provide services to Exelon (now Constellation Energy), owner - operator of North America's largest fleet of nuclear power plants with 21 reactors. RSI grew to become a critical partner, supplying project management and oversight services for outage, off-outage, and dry cask storage services. Smitty retired in 2021 after a lifetime of service in nuclear and Bill continues to work at RSI.
S3 was launched by subject matter experts from the military, law enforcement, and U.S. DOE / national labs to provide blended physical and cyber security consulting and training services to critical infrastructure sectors including nuclear, national security, electricity, and education (counter active shooter / active assailant). Clients include the U.S. Department of State, NERC's Electricity Information Sharing and Analysis Center (E-ISAC), utilities, and school districts.