Every company needs a vision to guide its growth, its success and its mission. From the beginning, Man- Machine Systems Assessment has been inspired by the concept of family and leaving the world a better place.

Cal Harris started MSA in 1990 after a long career in the Navy and more than ten years as a consultant working with government contractors. He believed in service to his clients and to his employees and wanted to create an environment where the two halves of a company would thrive.

MSA has grown strategically over the years, focusing on agile client service and building a solid foundation for its employees. Low turnover rates ensure that our clients receive unfaltering, exceptional service from the MSA team. We seek opportunities to work with new clients and partners, but we take pride in the fact that so much of our business comes from established client relationships.

Today, Cal’s vision is carried on by Lilly Harris in her role as President and CEO. For Lilly, MSA has always been about family—both of her parents played pivotal roles in the company for nearly three decades.

Lilly has worn many hats at MSA, serving as marketing director, HR director, chief financial officer and executive vice president. Since taking the reins in 2008, she has expanded MSA’s core offerings, increased revenue, and streamlined operations.

“What started as a small dream has evolved into an industry leader, dedicated to customer satisfaction by investing in the creativity and ingenuity of its employees…” – Lilly Harris, HEQ Magazine.

Meet the family behind MSA


Our values provide the framework for leadership and exceptional service that our clients, our partners and our team members have come to expect.

Honesty, Integrity and Respect – Our business depends on the trust of our partners, maintaining that trust is of the utmost importance to us.

Commitment to Client Success – We cannot succeed if our clients don’t thrive; your success is our success.

Continuous Improvement and Innovation – The world never stops changing, and we never stop evolving.

Exceeding Expectations – For our clients and our employees, we push ourselves to go beyond what is required, delivering exceptional service.

Community Service & Corporate Responsibility – We are in the business of strengthening our country, and we believe that strong communities make for a strong nation.


MSA is an award-winning, Woman-Owned Small Business celebrating 30 years in business. MSA remains passionate about supporting our Warfighters and contributing to the preparedness of our nation; working diligently to evaluate defense systems, ensuring continuity of operations while supporting mission essential programs critical to our national security. 

Led by President and CEO, Lilly Harris, MSA’s senior management team is experienced in supporting virtually every size and type of government contract. 

Since 1990, MSA has performed evaluations on over 400 systems for the Army, Air Force and Navy at over 60 test sites around the world (four countries and 17 states).

MSA was founded in El Paso, Texas in 1990 and has team members located throughout the United States to best support client needs. MSA has offices in El Paso, TX; Arlington, VA and Aberdeen, MD.

MSA holds the following designations: WOSB, SDB, MBE, DBE, SWaM and ISO 9001:2015.