About the team

Team Bios

Mark Oakes

  • PSP with 22 Years Experience
  • CEO of Concentric Security


Mark is the CEO and founder of Intellimar, Inc. and its two wholly owned companies; Concentric Security, LLC and Blue Ember Technologies.

He is a board-certified Physical Security Professional (PSP) through ASIS International with more than 25 years of experience in the planning, design and construction of physical security construction projects.

Mark is nationally recognized as an authority on the application of the physical security measures that protect facilities against bullet, blast and attack-related threats. He is also recognized for his expertise in strategic planning, business development, and the industry dynamics that impact end users and providers in the industrial security marketplace. He has authored numerous industry articles and speaks regularly on a wide range of business and security technology-related subjects. He consults regularly with both industry and a variety of federal government agencies.

He is the Chairman of the ASTM International Committee E54 on Homeland Security Applications. In this role he leads 466 contributing members who address issues related to standards and guidance materials for homeland security applications. He is also the Chair for the ASTM E54.91 strategic planning subcommittee.

In addition to ASTM International, Oakes is a member of ASIS International, the Society of American Military Engineers, the Construction Specifications Institute, and the Coalition for Government Procurement. He holds an M.A. in accounting/finance and an M.B.A., both from Auburn University, Alabama.

Mark and his team were awarded the Maryland Ernst & Young Business Services Entrepreneur of the Year, The Baltimore, Maryland Future 50 Award and his company was listed #34 on the 2004 INC 500 list of the fastest growing privately held US companies and #38 on the 2005 INC 500 list.

During his career he has held senior level marketing, sales and executive level positions marketing/sales positions at Norment Industries as well as the President of Mistral Security.

John Bray

  • Vice President
  • Expert in Systems Design, Product Development, and Manufacturing
  • Leads Corporate R&D


John has over 24 years of experience in the security industry in systems design, product development, manufacturing, and services oversight.

In his role as Vice President, John is responsible for overseeing the Service Division which maintains more than 1,500 barrier units across 350+ sites throughout the region and is rapidly growing.  John’s team is responsible for handling all maintenance contracts, barrier repairs, controls replacements, and equipment renovations.  John also leads the corporate R&D group which focuses on electronic systems design, corporate and product data analysis, new product development, and applying cutting edge technology to existing products & services.

With a background in software development and network administration, John was hired as Concentric Security’s first IT Manager and progressed quickly to become the IT Director.  From there John was promoted to General Manager of manufacturing and then moved to the Vice President position overseeing the Service and R&D group.

Before joining Concentric Security, John held IT positions at the Pan American Health Organization in Washington DC and the University of Maryland at College Park.

C. David Wachs

  • President
  • Expert on Complex Security Installations


David has over 35 years of experience in the security industry in manufacturing, sales and management. He has been involved with security products ranging from high security doors and window, electronic controls and perimeter security products.

David has been with Concentric Security for over 15 years and has been an integral part of the growth of the company during that time including starting the first regional office for Concentric Security with its own sales force and project management team, specializing in Access Control Point design and construction.

In his role as President, David is responsible for all aspects of sales and operations and the develop plan for growth. Before stepping in to the role of President for the organization, David was the Director of Sales, developing and organizing the sales team.

Before joining Concentric Security, David held senior management responsibilities at Norshield Security Products, Fiber Sensys, Airteq, Montgomery Technology, Inc, and Knox Kershaw, Inc. David holds a BS in Industrial Engineering and a Masters in Business Administration from Auburn University.