42 Planning and management of customers' information technology systems; information technology systems support services; information technology security, protection and restoration services, namely, computer security consultancy, erasing hard drives, restricting access to and by computer networks to and of undesired web sites, media and individuals and facilities; computer virus protection and computer systems restoration; data security services, namely, design and development of data security services; consulting services in the field of communications, namely, providing assistance in technical support regarding computer operating systems; installation, maintenance and repair services of customers' communication equipment and of customers' information technology systems, namely, installation, repair and maintenance of computer software; technical support regarding computer operating systems; computer security consultation; advice on the design and development of communications equipment and networks; planning and designing wireless communications systems; architectural design services; mechanical, structural, and electrical engineering design; architectural designs; design of controlled environmental buildings; all the aforementioned services to be provided to the armed forces and to other organizations in the public sector