Computer Engineer (Information Security)

Dr. Mark W Hartong, PE

Work Address: *** Independence Ave SW, Washington, DC 20591

Home Address: **** ***** ****, ********, ** 21122

Mobile Phone: 240-***-****

Work Email: ****.*.*******@***.*** Home Email: ****.*******@*******.***

US Citizen: Secret Clearance

INDUSTRIAL EXPERIENCE:

FEDERAL AVIATION ADMINISTRATION (FAA), Aug 2020– Present

Computer Engineer (Information Security): Lead cyber security engineer for the planning, development and implementation of information security requirements, standards, and architectures for the National Airspace System (NAS) Next Generation Air Transportation System (NEXTGEN). The NEXTGEN portfolio encompasses new technologies, airspace procedures, safety, and security standards across the FAA, other US government agencies supporting the aviation community, as well as domestic and international partners. Acts as the primary technical authority for major projects, programs, and other areas of FAA responsibility. Formulates US government policy and organizational positions as well as the FAA strategic vision.

JOHNS HOPKINS APPLIED PHYSICS LABORATORY, Jan 2019- Aug 2020

Cyber Systems Engineer (Senior Member of the Professional Staff): Provided operational subject matter expertise, conducting pure and applied research, and resolving technical issues related to the acquisition and development of classified cyberspace operations capabilities. Work involves development and application of theory of computation, information and coding theory, formal methods, algorithms and data structures, programming methodology and languages, computer elements and architecture, machine learning, computer security and cryptography to support implementation of cyber secure and cyber resilient systems. Provide system engineering expertise including requirements analysis, architecture development, mission analysis, and cyber capability assessments associated with the U.S. Nuclear Command and Control System (NCCS), the US Navy TRIDENT II (D5) Sea Launched Ballistic Missile UGM 133A service life extension program, the VIRGINIA Class SSN Submarine Warfare Federated Tactical Systems (SWFTS), the new COLUMBIA Class SSBN SWFTS, the US Cyber Command Unified Platform (UP), and the US Transportation Command Ultimate Guardian 21 (UG-21). Conducted i research on the application of theoretical computer science to engineering issues associated with the conduct of influence operations and information/electronic warfare.

FEDERAL RAILROAD ADMINISTRATION (FRA), Jun 2003-Jan 2019

Senior Scientific Technical Advisor: Served as the agency’s senior technical authority with respect to the development and application of artificial intelligence, computer systems and networks, security, database systems, human computer interaction, vision and graphics, numerical analysis, programming languages, software engineering, bioinformatics and theory of computing to safety and security critical electronics and software for use in the railroad environment. Played an integral part of the development of the agency’s regulatory agenda, having developed the Federal Regulations for the development and use of processor-based signal and train control systems, locomotive electronics standards, electronic hours of service record keeping, and risk-based routing of hazardous materials. Technical advisor to the Railroad Safety Board, advising the Board on the technical merits of requests for relief by railroads and vendors from federal rail regulations. Responsible for the evaluation and approval of train control systems for use in the United States. Served as the agency’s representative in various industry committees and US governmental task forces, as well as the US government’s representative to various foreign government and international conferences and symposia.

Lead federal oversight efforts of the $16 billion endeavor to develop and deploy Positive Train Control (PTC) across the national rail network in North America. PTC securely integrates communication, network capabilities, and control and business systems using software defined radios, satellite communications, and global navigation systems with radio frequency communications to provide real-time simultaneous command and control of trains. As part of my responsibilities supervised:

The development of the various PTC components and over 80 different new industry component, system, interface and security and interoperability standards covering there architecturally different technical approaches

Precision geo-mapping of more than 60,000 route-miles and more than 650,000 field assets, installation of PTC equipment on more than 20,000 locomotives.

Installation of more than 24,000 wayside interface unit’s custom designed for each location to transmit information from signal and switch locations along the right-of-way to locomotives and railroad facilities.

Installation of PTC technology on nearly 2,100 switches in non-signaled territory and complete signal replacement projects at over 15,500 locations.

Development, production, and deployment of a new radio system specifically designed for the massive data transmission requirements of PTC at tens of thousands of base stations, trackside locations, locomotives, and office.

Definition, development, and implementation of national network cybersecurity standards.

Direct the evolution of the associated back-office systems and upgrade dispatching software to incorporate the data and precision required for PTC systems.

Comprehensive component, integration, qualification, revenue demonstration testing, interoperability and system regression testing of software and hardware components in labs and field the field to confirm that they work in the real world.

Review and approval of system safety cases, acting as the final technical authority.

Monitor and analyze the development of associated operation and maintenance process and procedures, training, and configuration management.

As a result of my leadership and guidance, 6 of the seven largest Class 1 freight railroads, and two commuter railroads completed PTC system certification successfully. The technologies used include three fundamentally different technical approaches. These architectures were a direct result of my efforts and the research I lead. The study produced outcomes and information that was successfully used to design and develop communication systems and networks for the rail industry, thought North America. The long-term use and effects demonstrate a fully developed, tested, deployed system or networks which is in revenue operation on over 31,000 miles of the national rail network.

Provided ongoing support and consultation to the National Telecommunications and Information Administration (NTIA) in preparing for the International Telecommunication Union (ITU) World Radio Conference 2019 as the subject matter expert on wayside to train communications.

Appointed to the advisory board to the National Executive Committee for Space-Based Positioning, Navigation, and Timing. I was recommended and hand selected by the Secretary of Transportation. The Office of the Assistant Secretary of Transportation for Research and Technology as the Subject Matter Expert (SME) in the development of the Federal Radio-navigation Plan and GPS resiliency and interference issues related to rail use. The Department of Homeland Security considered me to be the SME on industrial control system security in the rail environment.

Directly responsible for the development, and enforcement of performance-based federal safety regulations for Processor-Based Signal and Train Control Systems, Positive Train Control Systems, and Locomotive Electronics through the Rail Safety Advisory Committee (RSAC). The RSAC collation consists of representatives from over 60 organizations drawn from rail labor, rail management, rail system suppliers, state/local governments, other federal agencies, and the rail system users. These three-separate performance-based regulations were the first performance-based regulations ever implemented by the Federal Railroad Administration.

Development, oversight, and direction of the congressionally mandated Railroad Safety Technology Grant (RSTG) Program. The RSTG Program is an ongoing $250 million multi-year effort to introduce advanced computer, communications, navigation, command/control and cyber security systems into the rail environment. I have been the RSTG Program manager since inception, and my duties include total lifecycle responsibility from pre-award through post-award. Under my guidance, seventeen RSTG grants have been completed. The outcome of the research has been integrated into the PTC program with positive results. A most notable was the development and deployment of what has become the railroad industry standard SDR communication PTC data radio.

Lead technical specialist and engineer for the application and implementation of high precision Global Positioning System (GPS) for PTC. The development, and test of software defined radio (SDR) systems, authentication and essential management services, and communications vulnerability assessments were of my responsibility. Worked with the academic, industrial, and operational organizations to incorporate crucial and applied research, collaborate with stakeholders in the development of integrated innovations and solution to improve the safety, security, and operational effectiveness of railroads.

Immediate staffing was comprised of 10 field specialists and inspectors assigned and deployed full-time in various regions across the United States. Matrix managed other government engineers supporting legal, administrative staff, safety, and engineering as well as grant /contract management personnel and specialists to monitor and regulate the agencies responsibility to Congress. COR to contract staff and provide guidance and monitor of awarded contracts.

LOCKHEED-MARTIN CORPORATION, April 1996-May 2003

Staff Systems Engineer: - Held various positions as staff systems engineer for various systems under development by Lockheed Martin. As part of the Undersea Surveillance Division acted as senior engineer for all combat and communications systems for the US Navy Virginia and Seawolf class nuclear attack submarines as well as the Trident class ballistic missile submarines. As part of the Mission Systems International Division, provided systems engineering for the development of combat command and control systems for Kuwait, Saudi Arabia, and Qatar. While working in the Management and Data Systems Division., provided on site customer program office systems engineering for a wide range of classified communications, hardware and software development programs exploring the theory of computation, information and coding theory, formal methods, algorithms and data structures, programming methodology and languages, computer elements and architecture, machine learning, computer security and cryptography to the design of state of the art communications systems and networking technologies. As a lead engineer in the Federal Systems Division responsible for execution of various tasks for the DOD Defense Message System (DMS). This included establishing technical direction for the future development of DMS security, directory, messaging, and management systems, deployment of the DMS into the tactical environment, compatibility with legacy communications systems, and integration of classified and unclassified messaging. I lead various teams through the process of implementing secure electronic mail and directory services across the entire US Department of Defense (DOD) and well as the other Combined Communications-Electronics Board (CCEB) member nations and North Atlantic Treaty Organization (NATO) member nations replacing the earlier switch based Automatic Digital Network (AUTODIN). Lead the successful integration of Open Systems Interconnection (OSI) X.400 mail, X.500 directory and X.509 public key certificates, with several specific extensions to meet the particular needs of military and intelligence community messaging at the Unclassified, Secret, and Top Secret/Sensitive Compartmented Information Level.

DATA SYSTEMS ANALYSTS, June 1994-June 1996.

Technical Consultant: Served at the company’s subject matter expert on the theory of computation, information and coding theory, formal methods, algorithms and data structures, programming methodology and languages, computer elements and architecture, machine learning, computer security and cryptography as it applied to DMS X.400/X.500/X.700 messaging handling systems, directory systems, management systems, testing, and network operations as well as the US DOD legacy AUTODIN Communications System

UNITED STATES NAVY, May 1980 - June 1994

Naval Engineering Duty Officer - As a navy line technical specialist qualified in Submarines Warfare, provided technical, acquisition and fleet industrial leadership to meet national defense needs for ships, submarines, and their associated warfare support systems. This covered hull systems, mechanical and electrical systems; combat systems; and command, communications and electronics. While on active duty in the Navy served as:

Deputy Program Manager & Staff Communications Officer, Integrated Under Sea Surveillance System, Washington, DC

Responsibilities included successful remoting of acoustical and command control data for the Naval Ocean Processing Facilities

System & Security Engineer AUTODIN & Defense Message System, Defense Systems Information Agency, Center for Systems Engineering, Washington, DC

Responsibilities included ongoing technical support to AUTODIN Automatic Switching Centers and technical support and programmatic support to the DMS Program Office

Seventh Fleet Planning and Estimating Superintendent, US Naval Ship Repair Facility Subic Bay, Republic of the Philippines

Managed the operational aspects of ongoing projects and served as liaison between project management and planning, project team, and line management. Reviewed status of projects and budgets; manages schedules and prepared status reports. Assessed project issues and developed resolutions to meet productivity, quality, and client-satisfaction goals and objectives. Developed mechanisms for monitoring project progress and for intervention and problem solving with project managers, line managers, and clients.

Officer in Charge, Ship Repair Unit, Bahrain

Oversaw and led all commercial hull, mechanical, electronics, and combat systems repairs for afloat units in the US Navy 5th Fleet Area of Operations.

Ship Superintendent, Docking Officer, Type Desk Officer, Mare Island Naval Shipyard, Vallejo, California

Managed the operational aspects of ongoing Deep Ocean Engineering Projects and Submarine Remote Site Availability

Damage Control Assistant, Communications and Electronic Material Officer, USS Sculpin (SSN 590)

Assistant Weapons Officer, USS Henry L Stimson (SSBN 655)

EDUCATION

Extensive formal academic and practical experience with the entire safety critical electronic system lifecycle for both railroad and non-railroad command control and communications systems.

Ph.D. Information Technology, George Mason University, Fairfax, VA (May 2009)

M.Sc. Software Systems Engineering & Certificate in Information Systems Security, George Mason University, Fairfax, VA (May 2001)

M.Sc. Computer Science, U.S. Naval Postgraduate School, Monterey, CA (June 1985)

B.Sc. Mechanical Engineering with Honors, Iowa State University, Ames IA (May 1980)

Advanced Level Examinations: Pure Mathematics, Applied Mathematics, Physics, Computer Science (Oxford and Associated Examining Boards), Stevenage College of Further Education, Hertfordshire, UK (May 1976)

Bachelor's degree is with honors with an emphasis in systems and computer-aided design. First master’s degree in Computer Science and Communications. Classified thesis as analyzing the performance of the S-1 Multiprocessor at Lawrence Livermore National Laboratory in conducting spread spectrum signal analysis and detection for intelligence applications. Second master’s degree in Software Systems Engineering, with a supplementary graduate certificate in Information Systems Security and Cryptography. Program at GMU was the first academic center in security at a U.S. university and is one of the National Security Agency’s (NSA) original Centers of Academic Excellence in Information Assurance Education and National Centers of Academic Excellence in Information Assurance Research

Doctorate is in the interdisciplinary field of Information Technology with a concentration in Cyber Security and Cyber-Human Systems. Encompasses computer science, software engineering, electronics and computer engineering, communications engineering, operations research, and security. Dissertation on Secure Communication Based Train Control (CBTC) Operations. CBTC systems are C4I systems that provide continuous, automatic train control, supervision, and operation utilizing high-resolution location determination, constant, high-capacity, bidirectional data communications, and processors.

OTHER PROFESSIONAL EXPERIENCE

JOHNS HOPKINS UNIVERSITY, August 2019-present

Adjunct Faculty Member, Computer Science, Whiting School of Engineering

Teach a graduate computer science course in Foundations of Algorithms with an emphasis on the design and analysis of algorithms to determine worst-case complexity in terms of time and space requirements while meeting functional requirement and assessing their actual performance compared to expectations from analysis.

TRANSPORTATION RESEARCH BOARD, NATIONAL ACADEMY OF SCIENCES, Jan 2012- Present

Promote innovation and progress through fundamental research in communications, cybersecurity research, systems engineering, test, and evaluation in an objective and interdisciplinary setting. The research and data contributions are from both academic and industrial researchers. Responsibilities include bringing stakeholders together to gather measurable information and data which is then analyzed and reviewed to be applied industry-wide and providing expert advice on transportation policy and programs. Management responsibilities for the elements of the Transit Cooperative Research Program, which includes guidance of ongoing research programs, and the management of the Innovations Deserving Exploratory Analysis (IDEA) programs.

GEORGE MASON UNIVERSITY, June 2012-present

Department of Computer Science Volgenau School of Engineering Advisory Board: Advise on workforce development demands, industry expectations, and employment trends.

GEORGE MASON UNIVERSITY, June 2014-present

Doctoral Committee PhD Committee Member: Serve on Doctoral Committee directing PhD Dissertation Research in Computer Science and Information Technology

GEORGE MASON UNIVERSITY, Spring Semester 2008

Technical Advisor-Systems Engineering-798: Acted as technical advisor to a group of 5 Systems Engineering and Operation Analysis Master’s Candidates on their capstone project “Decision Analysis for Toxic by Inhalation Material Routing”

IOWA STATE UNIVERSITY, Aug 1995 -Aug 1996

Instructor/Graduate Teaching Assistant: Taught undergraduate courses in introductory computer science and C/C++ programming as well as graduate courses in the Analysis of Algorithms and Advanced Computer Architecture.

US NAVAL POSTGRADUATE SCHOOL MONTEREY, Jan 1982-Jun 1985

Student / Research Assistant: Full time graduate/researcher in a special 27-month program with an emphasis in Communications, Computer Software and Architecture. Classified thesis was on computer analysis of spread spectrum signals for intelligence purposes. Research assistant on separate classified Naval Research Laboratory Project dealing with advanced computer architectural designs and engineering for communications signal processing.

AWARDS AND OTHER ACHIEVEMENTS

Registered Professional Engineer

Phi Kappa Phi

Tau Beta Phi

Pi Tau Sigma

Outstanding Graduate Student of the Year 2009

The Volgenau School of Information Technology and Engineering, George Mason University

Department of Transportation Secretary’s Team Award (2)

Department of Transportation Secretary Superior Achievement Award (3)

Department of Transportation Meritorious Achievement Award (1)

Federal Railroad Administrators Team Award (3 Awards)

Defense Joint Commendation Medal

Navy Commendation Medal (3 Awards)

Navy Achievement Medal (3 Awards)

Federal Aviation Administration (FAA) Private Pilot Single Engine Land

Federal Communication Commission (FCC) Amateur Extra Class Radio License,

Amateur Radio Relay League Volunteer Examiner

PUBLICATIONS

Numerous journal and conference proceeding papers relating to various policy, technical, and programmatic aspects in the field, as well as several book chapters. Regularly serve as a peer reviewer for the Association of Computing Machinery (ACM), Institute of Electrical and Electronics Engineers (IEEE) as well as a several Springer Verlag journals

Refereed Conferences

Mark Hartong, Rajni Goel and Duminda Wijesekera "Communications Based Positive Train Control Systems Architecture in the USA" Proceedings of the 63rd IEEE International Vehicle Technology Conference, 7-10 May 2006 Melbourne, Australia

Mark Hartong, Rajni Goel and Duminda Wijesekera "Communications Security Concerns in Communications Based Train Control" Proceedings of the 10th International Conference on Computer System Design and Operation in the Railway and Other Transit Systems, 10-12 July 2006, Prague, Czech Republic

Mark Hartong, Rajni Goel and Duminda Wijesekera "Use Misuse Case Driven Forensic Analysis of Positive Train Control- A Preliminary Study", Advances in Digital Forensics 2, IFIP International Conference on Digital Forensics, National Center for Forensic Science, Orlando, Florida, Jan 29-Feb 1;2006 Springer-Verlag New York Inc.

Mark Hartong, Rajni Goel and Duminda Wijesekera "Key Management Requirements for Positive Train Control Communications Security", Proceedings of the 2006 IEEE/ASME Joint Rail Conference, 4-6 April 2006, Atlanta, Georgia

Mark Hartong, Rajni Goel and Duminda Wijesekera "Mapping Misuse Cases to Functional Fault Trees for Positive Train Control Security", Proceedings of 9th International Conference on Applications of Advanced Technology in Transportation Engineering, 13-16 Aug 2006, Chicago, IL

Mark Hartong, Rajni Goel, and Duminda Wijesekera “Rail Infrastructure Security for Positive Train Control Systems” IFIP International Conference on Critical Infrastructure Protection, Dartmouth College, March 19-21,2007, Hannover, NH

Mark Hartong, Rajni Goel, Csilla Farakas, Duminda Wijesekera “PTC-VANET Interactions to Prevent Highway Rail Intersection Crossing Accidents” Proceedings of the 64th IEEE International Vehicle Technology Conference, 22-25 April 2007, Dublin, Ireland

Mark Hartong and Olga Cataldi “Regulatory Risk Evaluation of Positive Train Control Systems”, Proceedings of the 2007 ASME/IEEE Joint Rail Conference & Internal Combustion Engine Technical Conference, March 14-16, 2007 Pueblo, CO

Mark Hartong, Rajni Goel, Duminda Wijesekera, “Investigating Railroad Accidents Using Digital Forensics” Proceedings of the IFIP International Conference on Digital Forensics, National Center for Forensic Science, January 28-31,2007, Orlando, FL,

Mark Hartong, Rajni Goel and Duminda Wijesekera, “A Framework for Investigating Railroad Accidents” Proceedings of IFIP WG 11.9 International conference on

Digital Forensics, January 28 - 31, 2007, Orlando, FL

Mark Hartong, Rajni Goel and Duminda Wijesekera, “Cryptographic Protection And Recovery of Railroad Event Recorder Data, Proceedings of the IFIP WG 11.9 International Conference on Digital Forensics Kyoto University, Kyoto, Japan January 27-30, 2008

Jon Whittle. Duminda Wijesekera, and Mark Hartong, Executable Misuse Cases for Modeling Security Concerns, Proceedings of the 2008 International Conference on Software Engineering, Leipzig, Germany, May 10-18. 2008

Mark Hartong, Rajni Goel and Duminda Wijesekera, “Integrating Secure Train Control and Scheduling”, Proceedings of the IFIP WG 11.10, International Conference on Critical Infrastructure Protection, Dartmouth College, Hannover, NH, March 22-25, 2009

Mark Hartong, Rajni Goel and Duminda Wijesekera “Metamodels for Misuse Cases”, Proceedings of the ACM Cyber Security and Information Intelligence Research Workshop (CSIIRW09) Oak Ridge National Laboratory /University of Tennessee–Knoxville, Oak Ridge, TN, April 13–15 2009

Mark Hartong, Rajni Goel and Duminda Wijesekera “Secure Rail Interchange Routing”, Proceedings of the 51st Annual Transportation Research Forum, Arlington, VA USA March 10-13,2010

Mark Hartong, Rajni Goel and Duminda Wijesekera “US Federal Regulatory Oversight

Of Rail Transportation of Toxic By Inhalation (TIH) Material”, IFIP Working Group 11.10 International Conference on Critical Infrastructure Protection National Defense University Fort McNair, Washington, DC, USA March 14 - 17, 2010

Mark Hartong, Rajni Goel, and Duminda Wijesekera “Positive Train Control and the Rail Safety Improvement Act of 2008”, Proceedings of the 2010 ASME/IEEE/ASCE/AREMA/TRB Joint Rail Conference, University of Illinois at Urbana-Champaign, Urbana, IL USA, April 27-29, 2010

Mark Hartong and Edwin Kraft “Jointless Track Circuits for Broken Rail Detection for use with PTC and CBTC Systems”, Proceedings of the American Railway Engineering and Maintenance-of-Way Association 2020 Conference, Virtual, September 13-17, 2020

Refereed Journals

Mark Hartong and Sandi Roddy, “An Information Theoretic Approach to Platform Technology Selection to Aid Influence Operations” to appear in IEEE Systems Journal 10.1109/JSYST.2020.2966817

Mark Hartong and Olga Cataldi "Microprocessor Based Signal and Train Control- A New Regulatory Approach" Transportation Research Record, Journal of the Transportation Research Board, Issue 1943, Transportation Research Board of the National Academy of Sciences, Washington, DC 20001 USA

Mark Hartong, Rajni Goel, and Duminda Wijesekera,” Security and the US Rail Infrastructure,” International Journal of Critical Infrastructure Protection, December 2008, Elsevier, Publisher

Mark Hartong, Rajni Goel, Duminda Wijesekera, “Trust-based Secure Positive Train Control (PTC)” Journal of Transportation Security, December, 2008, Springer Verlag, Publisher

Mark Hartong, Rajni Goel, Duminda Wijesekera, “Positive Train Control (PTC) Failure Modes” Journal of King Saud University - Science, Elsevier BV Publisher Positive Train Control (PTC) failure modes Journal of King Saud University – Science (2011), Volume 23, Issue 3 July 2011

Mark Hartong, Rajni Goel, Duminda Wijesekera, Secure Interchange Routing Journal of Transportation Technologies, 2011, 1, 21-29 doi:10.4236/jtts.2011.12004 Published Online April 2011 (http://www.scirp.org/journal/jtts)

Book Chapters:

Mark Hartong, Rajni Goel, Duminda Wijesekera, Security and Dependability in Train Control Systems, Vehicular Communication, Automotive and Beyond", John Wiley, Publisher, 2010

Mark Hartong and Duminda Wijesekera, “U.S. Regulatory Requirements for Positive Train Control Systems” Railway Safety, Reliability, and Security: Technologies and Systems Engineering, IGI Global, 2012

Mark Hartong, Rajni Goel, and Duminda Wijesekera, Transportation, Advances in Critical Infrastructure Protection: Infrastructure Models, Analysis, and Defense” Wolthusen et.al Editors, Springer-Verlag Publisher, 2012

Technical Reports

Mark Hartong, Rajni Goel and Duminda Wijesekera, “Trust Based Secure Positive Train Control Interoperation”, ISE-TR-06-10, George Mason University, September 2006

Mark Hartong, Sandi Roddy “Cyber Warfare Systems Engineering: An Information Theoretic Approach to Platform Technology Selection to Aid Influence Operations”, AOS-19-0859, Johns Hopkins Applied Physics Laboratory, July 2019

Mark Hartong, Peter Greene, Jordan Thomas, Bruce Cottle, Phil Chimento and Triton Pitassi, “(U) NC3 Intelligent Control and Orchestration Architecture (Classified SECRET//NOFORN)” (AOS-19-1364), Johns Hopkins Applied Physics Laboratory, October 2019

Mark Hartong, Byron Hartzog, Michael Kramer, and Sandi Roddy, “Foundational Design Imperatives in Developing a Secure and Defendable Micro-services Enabled Unified Platform” (AOS-20-0381), Johns Hopkins Applied Physics Laboratory 30 March 2020.

Mark Hartong, Byron Hartzog, Michael Kramer, and Sandi Roddy, “An Agile, Modular and Secure Platform for the DOD Enterprise (AOS-20-2012 ), Johns Hopkins Applied Physics Laboratory, 5 June 2020.

Master’s Thesis:

Digital Performance Analysis of the S-1 Multiprocessor in Conducting Digital Spread Spectrum Analysis (Classified SECRET), US Naval Postgraduate School, Monterey, CA, May 1985 (Co-advisors: LCOL Alan Ross, USAF and CAPT Herschel Loomis, USN)

Doctoral Dissertation

Secure Communications Based Train Control Operations, George Mason University, Fairfax, VA, May 2009, Dissertation Director: Dr. Duminda Wijesekera

Invited Articles:

“Eight Things Railroads Should Know About PTC Implementation”, In-Transit Magazine, Summer 2009, HNTB, Pub, Kansas City, MO

Grady Cothen, Olga Cataldi, Mark Hartong, and Yan Tse, “PTC-Ready to Go?”, Mass Transit Magazine, Dec 2007/Jan 2008, Cygnus Inc, Pub, Beltsville, MD

Mark Hartong, Rajni Goel, and Duminda Wijesekera, “Key Management Requirements for PTC Operations,” IEEE Vehicular Technology Magazine, Volume 2, No. 2, 2007

Mark Hartong and Jason Schlosberg, “Positive Train Control- The Ultimate Safety Tech Upgrade”, TQ- The American Bar Association Transportation Committee Quarterly, Vol 3, No 1 Winter 2010

“T-5 and Counting” Railway Gazette

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