Group Leadership

PeopleTec's group leaders have been directly involved in the design, development, application, and management of Engineering, Modeling & Simulation, Rapid Prototyping, Cyber Security and Intel, and Program Support for a multitude of DoD and Civilian Federal sector customers.  
Our group leaders strive to consistently deliver excellence in the most cost efficient, timely, and ethical manner possible. 
“At PeopleTec, we are committed to setting the standard of technical excellence. We ensure that our entire senior management team embraces our mission of achieving and maintaining the highest level of technical excellence in the industry and continues to provide our customers with outstanding mission critical support.” 
-Doug Scalf, President 
Doug Barclay

Mr. Doug Barclay

Senior Vice President

Mr. Barclay brings over 30 years of Program Management in the area of modeling, simulation, trainer development, and software development expertise in the defense technical services arena. He has held a range of positions including Computer Scientist, Director, Division Manager and Vice President. Prior to joining PeopleTec, he was Vice President of the Exercise and Analysis Division for the Modeling, Simulation & Training Group at SAIC where he was responsible for over 80 employees with revenues exceeding $12M. From 1998 to 2003, Mr. Barclay served as a Director in Quality Research's Modeling, Simulation & Training Group and from 1984 until 1997, he worked at Computer Sciences Corporation in various technical and management positions. He received a B.S. in Computer Science from Auburn University in 1984.

Mark Braun

Mr. Mark Braun

Senior Vice President

Mr. Braun has over 30 years of engineering and management experience supporting DoD organizations including USASMDC/ARSTRAT, STRATCOM, MDA, TRADOC, JFCOM, PEO Missiles and Space, Army Test Command and AMCOM on major system developments and advanced technologies/concept developments. Prior to joining PeopleTec, Mr. Braun held positions with General Electric and MEVATEC Corporation. Most recently, Mr. Braun was Vice President for Army & Joint Programs at BAE Systems where he had management responsibility for over $240M in annual sales. Mr. Braun has a B.S. in Physics, an M.S. in Electrical & Computer Engineering and an M.B.A. Mr. Braun recently earned his PMI Project Management Professional Certification.

Anthony Brown

Mr. Anthony Brown

Vice President

Retired Army Col. Anthony “Tony” Brown has over 28 years of Army leadership experience in the Missile Defense Agency (MDA) and US Army Operational Air Defense Units. Mr. Brown currently leads our Avenger Task and serves as Program Manager for Design, Development, Demonstration, and Integration (D3I) Domain 2. He possesses superior capabilities in strategic planning, design, development, testing, production, fielding, and sustainment of Air and Missile Defense systems. Before joining PeopleTec, Mr. Brown served as Project Manager for MDA’s Terminal High Altitude Area Defense (THAAD) Project Office. He received an M.A. in Strategic Studies from the U.S. Air Force War College and an M.S. in Materiel Acquisition Management from the Florida Institute of Technology.

Dennis Dunaway

Mr. Dennis Dunaway

Vice President

Mr. Dunaway has over 25 years of experience in Army Aviation, including over eight years as a UH-60 Black Hawk pilot and is considered an industry leader in condition-based maintenance (CBM). He is currently leading PeopleTec’s systems engineering support, test & integration, CBM, and standardization for Army Aviation platforms. Prior to joining PeopleTec Mr. Dunaway was the Huntsville Operations Manager for Honeywell (formerly Intelligent Automation Corporation), a project manager at Avion, and at Scientific Atlanta.


Mr. Robert Goldsmith

Vice President

Mr. Goldsmith brings over 20 years of experience supporting DoD organizations in cybersecurity research and development, systems and mechanical engineering, strategic management, and executive leadershipMost recently, Mr. Goldsmith served four years as the GS-15 Cyber Lead for US Army, Aviation and Missile Research Development and Engineering Center (AMRDEC) followed by nearly three years as the Director of Cyber Integration for US Army Space and Missile Defense Command (USASMDC) / Army Forces Strategic Command (ARTSTRAT). Mr. Goldsmith earned a B.S. in Civil Engineering from the United States Military Academy at West Point in 1991 and an M.S in Systems/Industrial Engineering from the University of Alabama in Huntsville in 2008. 


Mr. Darrell Herriges

Vice President

Mr. Herriges has over 25 years of program management and operational command experience and has been supporting Missile Defense Agency (MDA) programs for the past 15 years. Mr. Herriges earned a B.S. in Astronautical Engineering from the U.S. Air Force Academy, an M.S. in Business Management from Troy State University and a M.S. in Aeronautics and Astronautics from Massachusetts Institute of Technology (MIT).

Graham Killough

Mr. Graham Killough

Vice President

Mr. Killough has over 25 years of system effectiveness and program management experience supporting the Army Aviation and Missile Research, Development, and Engineering Center (AMRDEC), the US Army Space and Missile Defense Command (USASMDC), and the Missile Defense Agency (MDA).  He has performed lethality assessments for virtually every Army-affiliated air and missile defense system, ranging from the Stinger to the Ground-Based Missile Defense System.  Mr. Killough has managed multiple contracts for USASMDC and  MDA.  Mr. Killough volunteers on multiple community organization boards.  He earned a B.S. in Aerospace Engineering from Auburn University.

Brandon Martinez

Mr. Brandon Martinez

Vice President

Mr. Martinez brings over 25 years of military, program management, and government contracting experience. He currently serves as PeopleTec’s Space and Missile Defense Advisory and Assistance Services (SMDA2S) contract Program Manager. Mr. Martinez has over 18 years of experience supporting US Army Space and Missile Defense Command / Army Strategic Forces Command (USASMDC/ARSTRAT) programs. Prior to joining PeopleTec, Mr. Martinez worked for Booz Allen Hamilton providing systems engineering, maintenance, and operational support to the USASMDC/ARSTRAT 1st Space Brigade and the 1st Space Battalion. He specializes in program management and operations leadership, including schedule management, project plans, workforce management, and building strategic alliances. Mr. Martinez is a US Navy submarine veteran and earned a B.S. in Business Management from the University of Phoenix in Colorado Springs and an Executive MBA from the University of Colorado.

Tina Nicholson

Ms. Tina Nicholson

Vice President

Ms. Tina Nicholson has over 25 years of experience in acquisition and program management supporting multiple DoD organizations including MDA, USASMDC/ARSTRAT, PEO Missiles and Space, PEO Aviation, Acquisition Career Management Office, and PM Army Acquisition Information Management.  She is currently the MiDAESS Program Manager for the MDA, Agency Operations Support Capability Group 5 contract.  In addition, Ms. Nicholson leads both the SETAC Space and Missile Defense Technical Center Strategic Planning and Technical Support task order and is the AMCOM EXPRESS PM for PEO Aviation, AGSE Product Office Programmatic Support.  Prior to joining PeopleTec, Ms. Nicholson served as a Director and Senior Project Manager at MEVATEC (acquired by BAE SYSTEMS).  She earned a B.S. in Mass Communications from Middle Tennessee State University.