Walter J. Hillabrant

Support Services International, Inc. provides support services to the federal agencies, Indian tribes and organizations, and private and public sector organizations. It specializes in systems and software development, information management, networking, web-based applications, documentation and training, computer aided instruction, survey and evaluation research, treatment outcome assessment, policy analysis, economic business development, and conference management. The company was founded in 1979 and is headquartered in Silver Spring, MD.

C4 Recovery Solutions Inc provides healthcare services. It offers technical assistance, project design, research systems, methodology design and consulting networks. The company was founded in 1988 and is headquartered in Istanbul, Turkey.