Chad Andrae

Assistant Professor,
Program Coordinator,
Cyber Defense Club Faculty Advisor

(850) 484-2035

I earned a Bachelor’s and Master’s degree in Computer Science from Columbus State University in my hometown of Columbus, Georgia. I began my career as a software engineer for Bytewise Measurement Systems–a small company in Columbus which is now a division of L.S. Starrett Company. We developed systems using a wide range of programming languages including C++, Visual Basic, Delphi, and C#. Our systems were integrated with other systems using digital and analog I/O as well as TCP/IP.

After almost 15 years in industry, I had an opportunity to transition into a full-time instructor role with Pensacola State College. I enjoy sharing my experiences with students and helping them pursue their career goals through PSC. It is an exciting time to teach in the computer science, information technology, and cybersecurity fields. With the rapid development of IoT, AI, machine learning, and the continuous evolution of cyber-attacks, I look forward to sharing a classroom with the future leaders in these fields.

William G. Bessemer (Mack)

Mack Bessemer received his First Masters of Science in 1999 from Embry-Riddle Aeronautical University in Daytona Beach Fl. His subsequent master’s degrees are a Master of Business Administration (MBA) in Computer Resource Management from Webster University Mo, and a Master of Science in Joint Information Operations in Unrestricted Warfare from the Naval Postgraduate School (NPS) in Monterey Ca. After his retirement as a Lt Colonel from the United States Air Force (USAF) in 2011, he has held the following positions: CEO/Owner Mack-Links Cyber Security and Cloud Management consulting Firm, Organization Senior Functional manager for USAF Cyber Operations Specialists, Chief Technology Officer (CTO) of Defense Business Systems for the Office of the Secretary of Defense, and CTO for the United States Marine Corps Intelligence Division.

Karin Carter

Karin Carter received her Master of Information Assurance, with a specialization in Cybersecurity, at Dakota State University in 2013. She has been in the field of Information Technology over 35 years. She has worked for the Department of Defense for over 40 years and has held many positions to include Desktop Support, Help Desk Technician, System Administrator, Network Engineer, and her current position is a Cybersecurity Test Engineer for the 48th Cyberspace Test Squadron, located at Eglin, AFB. She has worked at PSC for seven years and is active with the PSC Cyber Defense Club. She has coached teams of students in competitions such as Cyberthon, ITENWired, and the National Cyber League.

William Kelly, MSIS

William Kelly received his Masters in Information Systems from Minot State University in 2016.  He currently is an instructor in the department of Mathematics and Computer Science at Pensacola State College.  He has been an instructor for over twenty years.



Vaidehi Kumar

Ms. Kumar received her master’s in Computer Science from University of West Florida. She did her undergraduate studies at University of Madras, India. She also holds an Associate Degree from Allegheny County Community College, Pittsburgh, PA. She started as an adjunct faculty and teaching as a full-time faculty at Pensacola State college for 20 years. She has been teaching various courses for Computer Science degree programs and teaching Database Security and Programming in Python for the Cyber Security program.



Nelson Stewart, PhD

Department Head,
Associate Professor

(850) 484-1121

Nelson Stewart received his Doctor of Philosophy in Computer Science Information Systems from Nova Southeastern University in 2009.  He holds a Master of Information Systems degree from Duquesne University and a Master of Business Administration from Robert Morris University.  He currently is an adjunct professor and the department head for Mathematics and Computer Science at Pensacola State College.  Over the past twenty-five years, he has held positions as Director of Information Technology/Project Management, Systems Manager, and Systems Specialist.  He has been an adjunct university instructor for over twenty years.