Meet The Team
Our Professionals

C. David Shepherd

• ​ Chief Executive Officer
•  Chief Preparedness Officer

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Robert J. Coullahan

•  President
•  Chief Operating Officer


Mickey Kirschenbaum

•  Vice President
•  Senior Program Manager



Mr. Shepherd is Chief Executive Officer with RRG. He served 24 years with the Federal Bureau of Investigation (FBI) in various supervisory roles including 22 years of experience in SWAT operations as Team Leader and Coordinator.

For over 7 years Mr. Shepherd served as Executive Director of Security for The Venetian Resort Hotel & Casino – the fourth largest hotel in the world that includes seven million square feet of space in suites, shopping mall, night clubs, restaurants, theaters, convention space and casino.

He served on the American Society of Industrial Security (ASIS) Gaming & Wagering National Council; the DHS Commercial Facilities Sector Coordinating Council (CFSCC) as Co-Chairman, Gaming Resorts Sub-council; and on the White House Partnership for Critical Infrastructure (PCIS). He is a Member of the Board of Directors of the Las Vegas InfraGard Chapter.  He served in the United States Marine Corps.  He earned a B.S. in Marketing from the University of Utah, and an M.B.A. in Management and Masters of Public Administration in Criminal Justice from Golden Gate University.