ADVANCED UNDERGROUND, INC.

237990- Other Heavy and Civil Engineering Construction (Specifically: Construction management, mass transit) 541330-Engineering services (Specifically: Civil engineering services) 541715- Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)

541330 - Engineering services (LIMITED TO: ENGINEERING CONSULTING SERVICES); 541511 - Custom Computer Programming Services (SPECIFICALLY: CYBER SECURITY); 541611 - Administrative Management and General Management Consulting Services; 541618 - Other Management Consulting Services (SPECIFICALLY: TELECOMMUNICATIONS MANAGEMENT CONSULTING SERVICES); 541990 - All Other Professional, Scientific, and Technical Services (SPECIFICALLY: ELECTRONIC COMMUNICATION CONTENT VERIFICATION SERVICES, STATELLITE TELECOMMUNICATION CONSULTING)