Executive Profiles



Pamela Barratt White
Chairman of the Board

Starting at NASA, Mrs. White lived and worked the history of putting the man on the moon and the advent of the computer as well as missile-defense systems development, missile intelligence, and the Strategic Defense Initiative of the Reagan years. Her civil service career culminated as a GS-12 Program Analyst in the Comptroller Office, U.S. Army Strategic Defense Command.

Mrs. White, a Louisville, Kentucky native and former Air Force dependent, has lived in varied places across the United States and England, but considers Huntsville home since 1967 when she transferred from San Diego State College to Auburn University. Her diverse experience and education put her in the unique position to understand the technology of unmanned air vehicles and systems as currently being used and the potential for other applications of this technology---commercially and for homeland security. She regards engineers highly, saying:

“I believe engineers of all disciplines are among the most creative people I know. They do and must think creatively. SDI is at the cutting edge today in defense technology because of these fine minds that combine creative thinking with excellent technical skills. I intend to afford this great brain trust of ours at SDI every opportunity to parlay their innovation into fine defense solutions.”


Bob PortneyRobert L. (Bob) Portney

Mr. Robert L. Portney assumed the position of President of System Dynamics International (SDI) in August 2017 after serving as the Director of Proposals and Capture Management at SDI for 3 years. Mr. Portney brings to the position a strong background of over 40 years in general management and program management/control of US Government and International High Technology Programs and Operations. His corporate experience has focused on customers in the Intelligence, Surveillance, and Reconnaissance (ISR) market place, specialized military platforms, and engineering technical support to Government agencies, the DOD, and international petroleum industries. He has managed over 100 programs in his career, most with highly successful and profitable results, and has traveled extensively while managing projects around the globe. Mr. Portney is a top 20% graduate of the US Military Academy at West Point with a Bachelor of Science Degree in Engineering and a graduate of the Ourso School of Business at Louisiana State University with a MBA Degree. He is a Vietnam War veteran, a Purple Heart recipient, and has served as a member of the Corps of Engineers. He has an Engineering Certificate from the State of Pennsylvania. Bob has proudly been married for 45 years to his wife Betty and has two sons with distinguished careers as an engineer and a CPA.



Anthony P. Ward
Vice President Business Development & UAS Programs

Mr. Andy Ward joined SDI in January 2014 as the Director for Corporate Business Development.  Mr. Ward is a veteran of the United States Air Force and served 10 years where he completed multiple deployments in support of Operation Iraqi Freedom.  Mr. Ward graduated from Auburn University with a Bachelors’ of Science where he majored in Business Administration and minored in Information Systems Technologies. He is also PMP certified. Later, Mr. Ward worked as a contractor in support of Operation New Dawn and Operation Enduring Freedom throughout Afghanistan and Iraq for over 2 years. He went on to become a program manager supporting various unmanned aircraft systems operating in OCONUS locations. Since July 2016, Mr. Ward has served SDI as the Vice President for Business Development & UAS Programs. 



VOYED3Voyed Couey
Vice President of Operations, Training and Maintenance

Major Voyed Couey (retired) joined SDI in October 2016 as Program Manager of Training and Simulations.  Mr. Couey is a retired Army Aviator with over 20 years of military experience and leadership expertise across Industry Business, US Army, and Department of Defense (DOD).  Mr. Couey has deployed in support of both Desert Shield/Desert Storm, Operation Iraqi Freedom and Operation Enduring Freedom in Afghanistan.  He also developed with Industry a “two-time” award winning mobile application called “GORRDEE” which is a must have training application for UAS operators globally.  He earned his Level III DAU Program Management Certification as well as having In-depth experience with both Manned and Unmanned aviation in capabilities and management planning, and used both in a combat and simulation environment. Mr. Couey has been a key contributor to DOD unmanned aircraft systems operational employment and simulation employment in multiple UAS platforms as well as demonstrating the Manned Unmanned-Teaming (MUM-T) concept.  Mr. Couey was promoted to Vice President of Operations, Training and Maintenance in November of 2017.


DanaCantrellDana Cantrell
Corporate Controller

Mrs. Dana Cantrell joined System Dynamics International in July 2008 as an Accountant after graduating from Faulkner University with a Bachelors of Business Administration in December 2006.  She worked for several years in the Accounting and Finance Department, then transferred to the Contracts Department to work as the Contracts Administrator.  She advanced to the Director of Contracts in May 2015.  Mrs. Cantrell was promoted to her current role as Corporate Controller in September 2017.  Mrs. Cantrell is an experienced leader with over ten years of government contracting experience supporting the DoD and is a graduate of the Crestcom® Bullet Proof® Manager Program. She has led SDI through implementation of software and hardware infrastructure such as DELTEK CostPoint, Concur Travel and Expense, and payroll conversion through ADP.  She has been married for over 15 years to her husband Adam and they have two children.