The group's principal activity is to provide technical services and solutions to a variety of industries. the group operates in two segments: engineering and evaluations and technical staffing. the engineering and evaluations group provides technical analysis, engineering, mechanical and electronic evaluation to ascertain performance and reliability. the technical staffing services group provides information technology, managed services permanent placement and staffing. the customers of engineering and evaluations segment include aerospace, defense, commercial, automotive, electronics and nuclear industries. the customers of technical staffing group are information technology, information systems and software companies. the group's operations are conducted in the united states, united kingdom and japan. engineering and evaluation services accounted for 72% of 2001 revenues and technical staffing services, 28%.