Gregory Twardowski

Whelan Security Co. provides contract security staffing services. Its services include uniformed security, technology, quality assurance, industries served, national and strategic accounts, event services, patrol and alarm response and special services. The company was founded in 1949 and is headquartered in St. Louis, MO.

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.

Young Presidents' Organization, Inc. is a global leadership community of over 30,000 chief executives from 142 countries. The non-profit company is based in Irving, TX and has a global presence of subsidiaries in several regions. The company's mission is to help its members become better leaders and better people. The company was founded in 1950 by Ray Hickok, Khalid Mohamed Jassem Kanoo. Thayer Smith has been the CEO of the company since 2007.

TransNational Security Group LLC provides security services. Its services include uniformed security guards, executive protection, background investigations and security surveys, along with fire and security systems installation, monitoring and maintenance. The company was founded by Richard Rockwell in 1997 and is headquartered in St. Louis, MO.