Susan B.Chodakewitz

 President

Susan B. Chodakewitz is the president of Tetra Tech AMT. A wholly-owned subsidiary of Tetra Tech, AMT is the aviation management and information technology arm of a $2.6 billion engineering services firm with 13,000 employees in 330 locations worldwide. AMT is committed to providing clients with integrated solutions while operating as a trusted partner. Ms. Chodakewitz is leading both a "Green Aviation" and "Green Technology" thrust for Tetra Tech.

Prior to her selection as AMT's lead executive in November 2006, Ms. Chodakewitz held a series of increasingly responsible executive positions at SAIC, including Senior Vice President and Vice President of Operations, where she managed the strategic and daily operations of an $160 million business unit and directed key consulting areas including business process improvement, financial management, human capital management, and organizational change design. She also has almost a ten year tenure with Booz, Allen & Hamilton.

Ms. Chodakewitz served as the Chair of the Panel Planning Committee for the American Council for Technology and Industry Advisory Council on "Industry's Role in Homeland Security/Defense." She is a member of the Board of Directors Scholarship Committee for the Air Traffic Control Association. She is an active member of the Business and Professional Women's Foundation and a member of Women in Technology (WIT), a not-for-profit organization dedicated to offering women a wide range of professional development and networking opportunities. She is also a member of Women in Aerospace. She has participated the last four years as a panel speaker at the Annual FAA National Small Business Procurement Opportunities Training Conference. Recently, Ms. Chodakewitz was nominated for Ernst & Young's Entrepreneur of the Year award.

Graduating with honors from Lehigh University in International Relations and Russian Studies, Ms. Chodakewitz holds a Master of Arts degree in Russian Studies from Columbia University. She is a frequent guest lecturer at industry and government conferences and has authored over 40 publications and presentations.

Terrence N.Blair

 Chief Technology Officer

Terrence Blair is the Chief Technology Officer (CTO) of Tetra Tech AMT. In Mr. Blair's role as CTO, he is responsible both for setting the technology strategy for AMT, and working closely with AMT delivery and marketing teams to deliver technology-related consulting engagements; Mr. Blair's primary area of expertise is technology strategy. Mr. Blair has over 20 years of experience, including over 15 years in program and project management, software development, systems engineering, systems architectural design, software methodology and formal group facilitation.

Prior to joining AMT as its CTO, Mr. Blair spent 8-1/2 years with Sapient Corporation ending as the Technical Lead for Sapient's Federal Government consulting business unit. In that role he was responsible for implementing processes and procedures designed to ensure that the highest-quality technology solutions were being proposed and delivered by Sapient to its Federal Government customers. In addition, Mr. Blair played senior program management and technology delivery roles for very large technology implementations and technology strategy consulting engagements.

Mr. Blair graduated from American University with a Juris Doctor (JD) in Law and he also earned a bachelor-of-art degree in Justice from American University.

Stephen Delahunty

 Senior Vice President, Information Technology

Stephen F. Delahunty is the Senior Vice President of the IT Line of Business at Tetra Tech AMT. Mr. Delahunty's responsibilities include developing and executing the overall strategy and vision for the IT Line of Business as well as overall responsibility for the quality delivery, personnel management, client relations and business development activities.

Mr. Delahunty is an executive leader with 25 years proven program management, information technology, business development, team leadership, and program start-up experience. His information technology systems experience encompasses program/project management, lifecycle support, software development, enterprise architecture, security, networking, and telecommunications. Mr. Delahunty combines expertise in commercial and federal sector consulting services. In addition to US Government consulting services experience, he has held other industry management and consulting positions in the private sector across a range of critical business and systems engagements. His US Government consulting experience includes roles with firms including Booz Allen Hamilton, SAIC, and Stanley Associates.

Mr. Delahunty is adjunct faculty at George Washington University teaching graduate computer science. He is an elected Distinguished Fellow and board member emeritus of the Network Professional Association. He is a director at large on the North American board of the Global IT Community Association. Mr. Delahunty is also a board member emeritus of ByteBack, a non-profit community computer training center in Washington, DC. He was an invited member of the Network Computing Magazine editorial advisory board and an invited member of the Rochester Institute of Technology Academic Curriculum Advisory Group for the National Technical Institute for the Deaf. He is a regular technology conference speaker, panel member/moderator, and author of over 40 articles and industry reports including a series of articles for Network Computing and reports for InformationWeek Government. He holds various technology industry certifications, a Bachelor's Degree in Engineering from Lafayette College, a Master's of Business Administration in Technology Management from the University of Phoenix, and a Masters of Liberal Arts in Information Technology from Harvard University.

Captain Mary McMillan

 Senior Vice President, Aerospace Safety and Environmental

Mary McMillan is the Senior Vice President of Aerospace Safety and Environmental at Tetra Tech AMT in Arlington, VA. Her areas of responsibility include development and implementation of aviation safety programs, proactive multimodal safety systems, and aviation environmental sustainability strategies.

Prior to Tetra Tech AMT, at CSSI, Inc., she served as the Vice President for Safety and Environment for three years.  While at CSSI, she had overall program management responsibility for the support services contract to the FAA Air Traffic Organization (ATO) Safety Office in addition to other Safety Management services contracts.  In this capacity she participated in high level strategic activity and brought significant expertise to the development of FAA ATO safety initiatives.   She also advised the ATO on emerging environmental issues concerning aviation.

Captain McMillan has 25 years of airline experience, most recently as a United Airlines B757/B767 captain based in Washington D.C. Previous experience includes appointments as the UAL Flight Operations Duty Manager, Acting Director of Flight Safety, UAL Standards Captain and FAA Designee on the B737/300. In those positions, Capt. McMillan was involved in developing standards, implementing quality control measure and performing quality assurance functions. She has developed data analysis tools and techniques, utilizing qualitative and quantitative data in addition to identifying safety trends and metrics.

In addition to her duties for Tetra Tech AMT, Captain McMillan serves as the Independent Safety and Environmental Adviser to the Board of Directors of Air Services Australia. Her career accomplishments include: Chairman of the Air Line Pilots Association Sustainable Aviation and Environmental Task Force for which she received a Presidential Citation for her work in developing and fostering ALPA aviation environmental policy.  Past positions include Chairman of the ALPA United Airlines Central Air Safety Committee; member of the 2007 President�s Blue Ribbon Panel on Age 60; Safety Coordinator for the Association of Star Alliance Pilots (ASAP);  and International Federation of Air Line Pilots Association (IFALPA) representative to ICAO for Aviation Environmental policy. 

Captain McMillan began flying in 1982 and she is rated on the B767/757, B747-200, B737, DC-10 and Airbus 319/320, along with several turboprops. Her total flight time is 13,000+ hours. She resides in Alexandria, VA.

Jeffrey T. Williams

 Senior Vice President, Senior Aviation Advisor

Jeffrey Williams is a Senior Vice President in the Aerospace Practice at Tetra Tech AMT. In this capacity, he is responsible for related senior advisory services, NextGen support and enabling capabilities, including programs related to the Global Navigation Satellite Systems, Performance-Based Navigation, Environmental, Airspace and aviation management related DoD programs.

Prior to joining AMT, Mr. Williams served over 26 years in the Federal Aviation Administration (FAA) with his last position serving as FAA Acting Director of the System Operations Airspace and Aeronautical Information Management. Mr. Williams was the first manager of the Area Navigation (RNAV) and Required Navigation Performance (RNP) Group for the FAA's Air Traffic Organization. In this position he was responsible for developing and implementing a plan to transition the National Airspace System from the current ground-based navigation system to a performance-based system. He also served as the US Member to the International Civil Aviation Organization (ICAO) RNP Study Group and the US Member to the ICAO Global Navigation Satellite System Panel. He was the first FAA Air Traffic Services GPS Integrated Product Team Lead to the FAA's GPS program.

Mr. Williams graduated Magna Cum Laude from Daniel Webster College with a bachelor-of-science degree in management. He is also a commercial pilot with instrument and multi-engine ratings. In 2008, Mr. Williams received the Air Traffic Control Association, George W. KiskeAward of Merit, for his contributions to air traffic control safety, efficiency and capacity. He also received a Distinguished Service Award from the Helicopter Associate International.