Walter J. Antonell

VizorNet, Inc. provides information security solutions. It is building, acquiring and testing a set of IT, communications, and physical security environments that together provide multiple layers of bank-vault security for enterprises and networks focused on the challenges that make daily headlines. The firm products are based on proprietary disruptive technologies designed to solve major problems in enterprise security, as well as, intelligence, special operations, disaster response, and law-enforcement security. The company was founded by Mark D. Gatanas, Larry Schumann and Stephen W. Leibholz in may 2003 and is headquartered in Fairfax Station, VA.

Part of Eckert & Ziegler Strahlen- und Medizintechnik AG, Analytics, Inc. develops and provides custom-made radionuclide calibration standards and interlaboratory cross-check products for environmental monitoring and safety assurance in nuclear power plants. The company is based in Atlanta, GA. Analytics was acquired by Isotope Products Laboratories on August 11, 2005. The company was founded by Stephen W. Leibholz.