G4S is the world's leading international security solutions group, with more than 50,000 employees across the United States and Canada
Offering a unique combination of personnel, project management, risk management, and technology solutions, G4S focuses on advancing the safety and security of businesses and Governments, ensuring the security of key assets—people, property, products and reputation.

-G4S Secure Solutions in North America encompasses a range of business units which together provide the opportunity for truly integrated services to Government and the business sector.
-G4S Secure Solutions (USA) is a leading provider of integrated security solutions in the United States
-G4S Regulated Security Solutions (RSS) is a leading provider to customers in the specialized fields of commercial nuclear facilities
-G4S Nuclear Security Services Corporation (NSSC) is the worldwide leader in the field of detection and assessment systems for high level security facilities in the United States
-G4S Youth Services LLC provides governments with safe, secure, and effective programs that address the needs of delinquent and troubled youth
-G4S Secure Solutions (Canada) Ltd works in partnership with governments, businesses and organizations to provide integrated security solutions in Canada
-G4S Technology provides integrated systems and security solutions, protecting everything from small offices and schools to large multi-national organizations and high security Government facilities.
-G4S Compliance & Investigations is a global leader in fraud abatement solutions and corporate compliance needs.