Harold J. Haug

MDI, Inc. is a global technology company that provides critical infrastructure solutions to international governments, public safety and global commercial enterprise clients. It delivers integrated security solutions, door security solutions, enterprise communication, enterprise software solutions and high-technology infrastructure design and network integration. The company was founded in December 1995 and is headquartered in San Antonio, TX.

Professional Services Group provides human resources consulting services. The private company is based in Lancaster, PA.

Martin & Co. engages in rental, leasing and property management business. It issues various certifications, standards, and guidelines for the security profession. The company was founded in 1955 and is headquartered in Alexandria, VA.