541330 Engineering Services (Consulting Services-Non-Professional) 541690 Security Consulting Services 541990 All other Professional Scientific and Technical Services 813319 Public Safety Advocacy 921190 Other General Government Support 926150 Standards Setting and Management Services
Secondary
238210 Electrical Contractors (Covers electrical, fiber, network and telephone cabling) 561621 Security Systems Services (Except Locksmiths-covers security system equipment, installation, maintenance and monitoring)
541690 Security Consulting Services 541990 All other Professional Scientific and Technical Services 813319 Public Safety Advocacy 921190 Other General Government Support 926150 Standards Setting and Management Services