ManTech International Corporation has named Stephen J. Comber senior vice president and general manager of ManTech Health. Comber will lead ManTech Health in providing advanced technology solutions to enable its clients to achieve better health care outcomes, including the Defense Health Agency, the Centers for Medicare & Medicaid Services, and the Department of Veterans Affairs, among others. Comber joins ManTech Health from his previous position as president of Leidos Health (formerly SAIC Inc.).