* ManTech International, a Fairfax defense contractor, won a Naval Air Warfare Center Aircraft Division contract to provide the U.S. Naval Air System Command engineering department with continuing support for engineering, technical, administrative and other services during the design, development, production and in-service cycles of naval aircraft and their systems. The contract is for one year, with four one-year options, and is worth up to $49.8 million.

* Indus, a Vienna information technology company, won a two-year, $26 million contract from the Department of Health and Human Services to support the small operating division information technology service center. Indus will support technical operations, maintenance and infrastructure consolidation services for the IT service center's systems.

* Dimensions International, an Alexandria engineering and integration company, acquired Sentel, also an Alexandria engineering company. Terms were not disclosed. Dimensions International provides engineering services to the U.S. military and federal agencies, as well as commercial and international clients. Sentel specializes in test engineering, software development, electromagnetics engineering and chemical-biological agent defense. The combined company will have more than 800 employees and more than $100 million in revenue. The companies said they were both ranked among the Top 100 black-owned companies nationally by Black Enterprise magazine.

* CGI Group, an information technology company based in Montreal, named Donna S. Morea president of CGI-AMS (formerly AMS). Morea was most recently AMS's co-chief operating officer and general manager of the company's public sector practice. She will be based in Fairfax. CGI acquired AMS, with the exception of the defense and intelligence group, last month.

* PEC Solutions, a Fairfax professional services company, named Robert L. Veschi president of the defense sector. In this new position, Veschi will manage PEC's defense business, including existing business and that of recently acquired Integrated Information Technology Corp. Veschi has served as executive vice president of Affiliated Computer Services and president of Lockheed Martin's integrated business solutions company.

Compiled from reports by Washington Post staff writers, Dow Jones News Service, Business Wire and PR Newswire.