Richard J. Bierman

DDL OMNI Engineering LLC provides engineering and technical services. It specializes in alteration design and installation; environmental; materials and structures engineering; program and strategic management; sensor and electronics development; software, web and systems development; technical documentation; and training and simulation services. The company was founded in 1967 and is headquartered in McLean, VA.

Grant Thornton LLP provides accounting, tax and business consulting services. It offers advisory, business consulting, business risk, enterprise technology and innovation, transaction services, data analytics, cyber risk, and data integrity services. The firm serves the construction, real estate and hospitality, consumer and industrial products, energy, financial services, health care and life sciences, not for profit organizations, private equity, public sector, and technology industries. The company was founded in 1924 and is headquartered in Chicago, IL.