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Buddy Johns

President and CEO, ISI Security


Buddy-JohnsBuddy Johns is President, Chief Executive Officer and Chief Operating Officer of ISI Security. Buddy joins ISI Security from CGL Management Group, LLC where he served as Chief Executive Officer. Prior to CGL, Buddy was a Managing Director of Real Estate at Corrections Corporation of America.


With more than 30 years of experience in the construction and development industries, Buddy has earned an excellent reputation with our customers and competitors in the detention construction industry. He has developed, built, and managed more than five million square feet of industrial properties including Class A flex, heavy industrial and correctional properties. He has six years of public accounting experience with Deloitte & Touche and is a Certified Public Accountant. 


In his most recent position as Managing Director of Project Development for Corrections Corporation of America, Mr. Johns was responsible for the development of more than 13,000 new beds. He was directly responsible for the development and construction of the 3,240-bed La Palma Correctional Center that was designed and built in less than 12 months, including a phased delivery that began less than eight months after construction.


Buddy received his Bachelor of Science degree from Robert Morris University, and his Masters of Business Administration from the University of Pittsburgh.



Matthew A. Kepke

Vice President, General Counsel and Secretary, ISI Security


Matthew Kepke has been a practicing attorney since 2001. Prior to joining ISI Security, he was a Senior Associate at Loeb & Loeb LLP. As part of the firm’s Corporate Department, he was a member of the Securities, Mergers and Acquisitions and Corporate Governance Practice Groups. Before joining Loeb, Matthew was an Associate at Jenkens & Gilchrist Parker Chapin LLP.


Matthew has spent his entire career representing both public and private companies on general corporate and securities matters, with particular emphasis on representing U.S. and foreign corporations including emerging private corporations. Matthew’s representation has included securities offerings, private and public company mergers, acquisitions and dispositions, as well as the preparation and review of periodic, quarterly and annual reports. He brings experience in advising clients on the Sarbanes-Oxley Act and a variety of market compliance rules. Matthew also has significant banking and lending experience that includes representation of commercial banks, finance companies and borrowers in connection with a variety of financing transactions.


Matthew earned his JD from Case Western Reserve University School of Law, Cleveland, OH, where he was an Associate Editor of Health Matrix: Journal of Law-Medicine. He secured his BA in Psychology from the University of Michigan, Ann Arbor, MI. Matthew is a member of the New York State Bar.



Zach Greene

Executive Vice President of Sales & Business Development, ISI Security



ZachZach began his career in the detention industry in 1998 when he worked as an assistant project manager for Sierra Detention Systems.  Between 1998 and 2005, Zach progressed to Vice President at Sierra.  During his time there, he was responsible for growing revenues from $5 million to $20 million a year, and started Sierra’s Security Electronics Division. In 2008, Zach joined Southern Folger as the Director of Technical Services.  While at Southern, he grew their technical service division from a $500,000 business unit to a $12 million business unit with a consistent 10% EBITDA by implementing a creative solution-based selling strategy and building a strong operational team. 


Zach joined the ISI team in 2009 as a senior project manager for ISI Detention where he managed detention contracts and helped the sales team identify and capitalize on opportunities with existing clients.  In 2012, he went to California-based PDI where he stabilized the operation before returning to ISI in 2013 where he has been serving as Director of Business Development for the corrections business units.  Promoted to Executive Vice-President of Sales and Business Development, Zach is now responsible for the overall sales and marketing efforts for all detention companies for ISI Security.


Zach graduated from University of Colorado in 1996 and has completed continuing education certifications from Colorado State University and Alamo Community College in Project Management and Leadership.



Mark McDonald

Vice President of Sales, MCS Detention


mark-mcdonaldMark McDonald has more than 28 years of industry experience. He is responsible for an array of different services ranging from Sales to troubleshooting as a Service Technician.


Mark’s background consists of working as a Service Manager, where he received the company’s highest sales award for four years in a row. He has also operated as a General Manager responsible for Design, Development and Sales of control systems, which he also engineered.


Mark has served as President of MCS where he was responsible for the Detention Division’s sales. Through this role, he developed relationships with Private Operators and General Contractors, among others. Mark has also served as Account Manager for GEO group where he was an integral participant in the design and supply of security equipment to more than 20 GEO facilities. Working closely with engineers, he has provided numerous clients with design/development projects. Through his expertise in the industry, he has increased sales growth from $800,000 to more than $5 million. His experience and technological background is essential to the growth of the detention industry.


Mark received his Associate of Arts degree in electronics from Chabot College, Hayward, California.



David Deason

Vice President of Sales and Estimating, ISI Detention


David_DeasonDavid Deason’s experience and knowledge in this industry has propelled him to Vice-President of ISI Detention. He brings more than 24 years of industry experience and leadership in both the detention and commercial markets.


In his extensive career, his roles have varied from construction project management to design build sales. Previously, he was a founder and served as Executive Vice President of JMAR/Matney Corporation, dba Southern Systems, a commercial building supply company based in Austin and Houston, Texas that generated annual sales of 21 million.


David was also responsible for Vauter Wood Door Company, a subsidiary of JMAR/Matney Corporation with annual sales in excess of 5 million. Some of David’s accomplishments include developing a full in-house commercial hollow metal shop which was capable of bending and fabricating custom frames and doors.


David holds a Bachelor of Building Construction Degree from Texas A & M University and is a Design Build professional with the Design Build Institute of America (DBIA).




Pat McCracken

Vice President of Operations, ISI Detention



Pat McCracken is Vice President of Operations for ISI Detention. With an extensive background in operations, Pat has hands-on experience that makes him uniquely qualified and a perfect fit for this position. Pat began his tenure with ISI in 2002 as Project Manager progressing to his current position as Vice President of Operations.


Pat’s prior experience includes his career with Southern Steel from 1991 through 2000 starting as an on-site Project Engineer and quickly moving to a Senior Project Manager role. He continued his operational experience with Miller Building, a general contractor located in Wilmington, NC from 2000 through 2002 working as a Project Manager for their correctional division.


Pat graduated from Texas A & M University in 1991 with a Bachelor’s Degree in Building Construction.




Darwin Katan

Director of Technical Services, MCS Detention


Darwin_KatanDarwin Katan is Director of Technical Services of MCS Detention. In this role, he is responsible for the planning, coordination, design, scheduling and implementation of the security equipment to be installed in prisons, jails, court houses and juvenile centers. He also oversees the management of the Production Department consisting of technicians, installers and designers who are responsible for the fabrication of the equipment to be installed at each client location. He also plays a key role in direct client support and coordination with the owners to ensure that requests and changes are handled in a timely manner as well as ensure troubleshooting and system support are maintained throughout the installation and warranty time frame.


Previously Darwin was Project Manager/Engineer with Southern Steel’s Security Electronics Division. Before that he was with the Texas Department of Criminal Justice as a Manager I for security electronics. Darwin also earned the Journeyman License (Communications Electrician) and Certificates for Network Administration and Business Administration and Management.


Darwin secured an Associate Degree in Telecommunications from N.A.I.T. in Edmonton AB, Canada.



Jeff Paulik

President, Com-Tec Security


Jeff-PaulikJeff Paulik is President of Com-Tec Security, LLC. He brings more than 30 years of technical experience in the security electronics marketplace specializing in correctional electronic control systems. A well regarded industry leader, Jeff Paulik has guided teams of professionals with a long-standing reputation for outstanding customer service and on-time performance. Prior to his role as President, he served as Vice President of Sales for Com-Tec Inc. and started his career as Technical Sales Representative.




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