David H. Langstaff is a business and community leader with extensive experience as Chief Executive Officer and Director of advanced technology and professional services companies.

From mid-2006 through 2007, Mr. Langstaff served as Chief Executive Officer and Co-Chairman of Olive Group, a global provider of integrated security and risk mitigation solutions that enable governments, non-governmental and commercial customers to protect critical infrastructure and other high-value assets. Olive Group operates in over thirty countries, with principle offices in Dubai, London and Washington, D.C.

From 1995 until its sale to General Dynamics in August 2003, Mr. Langstaff was President, CEO and Director of Veridian Corporation, which specialized in mission-critical national security programs primarily for the intelligence community, military and other U.S. Government agencies involved in law enforcement and homeland security. Under Mr. Langstaff's leadership, the company's annual sales increased ten-fold, from $100 million to $1.2 billion, and developed a reputation as one of the preeminent companies in its field with a strong values-based culture. In June 2002, Mr. Langstaff took Veridian public (NYSE: VNX); it was recognized by The Financial Times as one of the ten best global IPOs in 2002.

From 1984 to 1995, Mr. Langstaff served as Executive Vice President and Chief Operating/Financial Officer of Space Industries International, Inc., which in 1993 merged with Calspan SRL Corporation. Following a management-led buyout in 1995, Mr. Langstaff assumed the role of President and CEO and subsequently renamed the company Veridian.

From 1981 to 1984, Mr. Langstaff was employed by the Inverness Group in Houston, Texas, where he focused on corporate finance, venture capital, and mergers & acquisitions. Previously, Mr. Langstaff was based in Europe where he held corporate finance positions with First Boston International and Blyth Eastman Dillon & Co. International.

Mr. Langstaff serves as a seminar moderator with the Aspen Institute, and chairs the Advisory Board of the Business and Society Program of The Aspen Institute, a policy program focusing on business education, ethics and values, and the challenge of confronting the behaviors and practices that contribute to excessive corporate and investor emphasis on short term performance. Mr. Langstaff speaks on such topics as values-based leadership, governance, and attracting and retaining the knowledge worker. In 2000, he was among a select group of industry executives invited by President Clinton to participate in the first White House Summit on Cyber Security.

Mr. Langstaff is on the Board of Directors of SRA International (NYSE: SRX), where he Chairs the Compensation and Personnel Committee, and is a Trustee of The Committee on Economic Development.

Mr. Langstaff is active in the community, particularly in the fields of the performing arts and education. He is Chairman of the Board of the BlackRock Center for the Arts in Germantown, MD, is Vice Chairman of The Potomac School in McLean, VA, and is a Trustee of the Pestalozzi US Children's Charity. He was Founder and Artistic Director of Revels Houston, and remains an active singer and musician, playing renaissance and folk instruments. He has performed nationally and internationally as a soloist with professional and amateur ensembles. Mr. Langstaff currently serves as Chairman of The Wildheart Group - an entertainment and communications business currently producing a multi-hour PBS television documentary to be broadcast in the Fall of 2010 entitled 'On Record - The Soundtrack of Our Lives' with Sir George Martin and Kevin Spacey.

Mr. Langstaff received a Bachelor of Arts degree, cum laude, from Harvard College in 1977, and earned a Master of Business Administration degree from the Harvard Graduate School of Business Administration in 1981. He and his wife have four children and live on a farm in Maryland.