Arthur D. Sams has served as our President, Chief Executive Officer and Chairman of our Board since August 1991 and as our Secretary since October 2016. Under his leadership, we have grown to be a leading brand name in the design and manufacturing of DC power systems for the telecommunications, military, automotive, marine and industrial markets. He specializes in the design of thermodynamics and power generation systems. During his early career, he gained vast industry experience while working as a machinist, engineer, project manager, chief technical officer and consultant for various Fortune 500 companies and the U.S. Department of Defense and the U.S. Department of Energy. Mr. Sams studied at California State Polytechnic University Pomona and the University California at Irvine with a dual major in biology and engineering.

Luis Zavala has served as our Chief Financial Officer since April 2018 and served as our Acting Chief Financial Officer from March 2016 to April 2018 and as our Vice President Finance from August 2009 to March 2016. Prior to that, Mr. Zavala served as the President of Sky Limited Enterprises, a general contractor, from June 2006 to August 2009. Prior thereto, Mr. Zavala worked as Director of Finance for Legacy Long Distance International, a telecommunications and operator service provider company, from March 2001 to May 2006. Mr. Zavala also has over 20 years of experience managing accounting and finance departments in various industries, including banking and telecommunications. Mr. Zavala earned his Bachelor's Degree in Business Administration from the California State University of Northridge and his MBA at Keller Graduate School of Management, Long Beach.