Leadership

Global Solutions for People, Programs and Processes

Versar Leadership Team

Click to Read Bio

Dwane Stone

Chief Executive Officer

Click to Read Bio

Christine Tarrago

Chief Financial Officer

Click to Read Bio

Nayna Diehl

VP, Corporate Counsel & Director for Contracts

Click to Read Bio

Daniel M. Patton

Senior Vice President / Program & Construction Management and Military Programs

Click to Read Bio

Suzanne J. Bates

Senior Vice President / Environmental Services and Security Systems

Dwane Stone

Chief Executive Officer

Mr. Stone has over 40 years of experience with engineering and construction (E&C) firms in the broader contracting industry in many, progressive roles through CEO. His experience encompasses engineering, construction, mergers and acquisitions, sales, and technology and project development all over the world. As well as having held a number of management positions in business development, technology development and marketing, Mr. Stone has also served as a President of Black & Veatch, a global E&C company primarily in the energy arena; as President & CEO of Tepsco, a domestic E&C company operating primarily in the pipeline and industrial E&C markets; as SVP of CH2MHill a global E&C to create and build their global energy business; and as President of Ausenco, an Australian E&C based in the minerals industry and diversified the company into the global energy market. He has served on the boards of E&C and Technology businesses, and has had responsibility for international corporate subsidiaries in many different companies. For the past 4 years he has been focused in the acquisitions business supporting efforts to acquire firms in the O&G, chemicals, and power engineering; construction, field services, government, and maintenances contracting markets.

Mr. Stone graduated from the Georgia Institute of Technology with a Bachelor's degree in Chemical Engineering and received his MBA in Finance from the University of Houston. He has 2 daughters and 4 granddaughters.

Christine Tarrago, CFO

Chief Financial Officer

Ms. Tarrago has more than 20 years of financial executive leadership in North America and Europe. Ms. Tarrago comes to Versar from ICS Nett, where she served as Vice President and Corporate Controller. Prior to that, Ms. Tarrago served as Vice President Finance at K12, Inc. from March 2016 until January 2017 and as Vice President Finance, Corporate Controller of Lightbridge Communications Corporation from May 2011 to January 2016. She also has had leadership positions at companies including Marlink, Siemens and ALSTOM. Ms. Tarrago has a BA and MBA from the University of Augsburg in Germany, is fluent in four languages, and is a registered CPA in the State of Illinois.

Nayna Diehl

VP, Corporate Counsel & Director for Contracts

Nayna Diehl has 15 years of experience advising clients on federal, state, and local public sector procurement law. She specializes in Department of Defense contracts of commercial items and services, providing counsel on transactions governed by the FAR and DFARS, foreign military sales, information security compliance, supply chain management, and export controls under both the ITAR and the Commerce Control List. Ms. Diehl has also managed M&A transactions of government contractors, and the set-up of the government contracting compliance program sunder the subsequent privately-held ownership structure. Ms. Diehl is licensed in New York and Virginia. She holds a JD from the University of the Philippines and an LLM from the Washington College of Law.

Daniel M. Patton

Senior Vice President, Program & Construction Management and Military Programs

Daniel M. Patton serves as the Senior Vice President for Program and Construction Management at Versar, Inc. He leads two business units, with professional teams deployed around the world supporting diverse military, government, and commercial clients. He is also responsible for the Versar Military Programs Initiative, which is bringing innovative approaches, tools, and partnering strategies to help our military clients solve their most critical infrastructure and facility life-cycle challenges.

Mr. Patton graduated from the University of Florida College of Engineering in 1984 and, having been commissioned in the Army a year earlier, began his professional career on active military duty. Leadership positions early in Colonel Patton's military career included platoon leader, company executive officer, and battalion construction officer with the 79th Engineer Combat Battalion (Heavy) in Karlsruhe, Germany; battalion civil engineer and company commander (where he led combat operations in Desert Storm), 62nd Engineer Combat Battalion (Heavy) in Fort Hood, Texas; aide-de-camp for III Armored Corps Deputy Commanding General; and finally as a team leader for the Engineer Officer Advance Course at Fort Leonard Wood, Missouri.

Upon entering the U.S. Army reserve, Colonel Patton served on four active duty assignments, which included positions as Program Manager, USACE Emergency Operations Center and Office of the Chief of Engineers-Pentagon; Deputy Director of Construction for the Iraq Reconstruction Program Management Office; Special Operations Command-Central (SOCCENT) Engineer in Qatar and Pakistan; and finally, as the Commander of the USACE Tornado Recovery Field Office in Joplin, Missouri. Colonel Patton's unique accomplishments on behalf of the military during this period include developing the initial Iraq Reconstruction Program Integration strategy to effectively manage a $12 billion program; creating the original Land Development Engineer/Integrating Contractor concept to deliver the Fort Bliss BRAC 2005 program; and establishing new leadership strategies for future emergency/disaster management programs. Colonel Patton retired from the U.S. Army Corps of Engineers in 2013.

Mr. Patton has served in executive positions with several companies in the engineering, construction, and energy industry, having led mega-programs in infrastructure construction, homeland security protection, energy security, and emergency management/resilience.

Suzanne J. Bates

Senior Vice President, Environmental Services Group

Suzanne Bates, B.S., M.S. joined Versar in September 2013 as a senior program manager and lead operations manager. Currently, Suzanne serves as Senior Vice President and Group Manager for Versar's Environmental Services Group. Prior to joining Versar, Suzanne served as the Environmental Group Lead for Geo-Marine, Inc, leading programs and projects focused on the Department of Defense and other federal agencies. She is a graduate of Texas A&M University-Corpus Christi with a Bachelors of Science degree in biology and chemistry and a Masters of Science degree in marine sciences.