Meet Our Team
Mr. Vikan is the President of TACG. He joined the company in January 2009.
Mr. Vikan works closely with the Directors to provide management oversight and strategic direction for TACG. As the President, Mr. Vikan is responsible for establishing operating policies and guidance for the company. Prior to TACG, Mr. Vikan worked for BearingPoint where he specialized business case analyses for clients exploring major process and information technology initiatives. Mr. Vikan also managed multi-year education and training initiatives for a Federal client while at BearingPoint. Mr. Vikan is an Air Force veteran. While on active duty, Mr. Vikan was a research scientist working advanced aircrew life support systems and a test manager and acquisition program manager for electronic combat systems. Mr. Vikan is certified in program management and test and evaluation management. He earned his Bachelor of Science in Biology from the University of South Carolina and his Masters of Systems Management from the Air Force Institute of Technology at Wright-Patterson Air Force Base in Ohio. Mr. Vikan is active in community endeavors. Mr. Vikan is a graduate of the 2015 Leadership Dayton program and recently completed a 4-year tenure on the Dayton Art Institute’s Associate Board. As a hard-core outdoor enthusiast and naturalist, Mr. Vikan is a master of the trivial about plants and animals.
Erika O Hora
Ms. O Hora is Chief of Staff for TACG. She joined the company in January 2013.
Ms. O Hora serves as the strategic advisor to the President, assuming day-to-day responsibility for the Business Development team projects. She creates and maintains cross-departmental relationships to enable corporate success. Ms. O Hora is also responsible for growing and maintaining TACG’s extensive portfolio of partner companies.
Prior to her tenure at TACG, Ms. O Hora served as a Scheduler for United States Congressman Steve Austria. During her tenure on Capitol Hill, Erika was responsible for managing relationships between Mr. Austria and other members of Congress, committee members, and various high level political and military figures.
Ms. O Hora earned her Bachelor of Arts in Political Science from Miami University in Oxford, Ohio. Currently, she is an active member of the Women in Defense Logistics community.
Ms. O Hora lives in Washington, DC with her husband, 2-year-old son, and Maine Coon Cat, Jemmi. She is an avid traveler, vintage shopper, wine drinker, and sports enthusiast.
Erin O’Brien Chamish
Ms. O’Brien Chamish joined TACG in 2012.
She has over 12 years of experience in the public, private, and government sectors. Ms. O’Brien Chamish has created custom learning management courseware for the US Food and Drug Administration, supported the US Naval Research Laboratory’s implementation of an Oracle financial system, and provided expertise to the United States Air Force on interoperability reporting and navigating the Information Support Plan (ISP) approval process.
In her previous role at Metastorm (now OpenText), she created thought leadership and best practices in implementing Business Process Management, Business Process Analysis, Knowledge Capture, and Enterprise Architecture solutions.
Mrs. O’Brien Chamish earned her Bachelor of Arts in English with a minor in History from Washington College in Chestertown, Maryland.
Mrs. O’Brien Chamish lives in Bend, Oregon where she enjoys rock climbing, skiing, downhill mountain biking, and surfing with her family.
Mr. Schell joined the company in February 2009. He is responsible for the TACG Foreign Military Sales portfolio.
Mr. Schell served in various assignments as a decorated Active Duty Army Officer. He is a graduate of the United States Military Academy, West Point. Joel brings 20 years of professional experience in supply chain, logistics, business operations, and program management. Mr. Schell’s career has included leadership positions across multiple sectors. His diverse assignments within the public sector include overseas and foreign military sales.
Currently, Mr. Schell can be found coaching multiple sports teams in his community and also serving as the Youth Football Director. Joel and his wife also enjoy boating with their identical twin boys and young daughter.
Mr. Selvaraj has over 28 years of professional service experience in providing results-oriented Information Technology (IT) and business solutions to the government sector. Prior to joining TACG, his consulting career spans delivery, business development, business operations, and leadership positions at KPMG, BearingPoint, and Deloitte Consulting.
He has demonstrated expertise in Business Operations, Program/Project Management, Requirements Engineering / Analysis, Enterprise Architecture, Master Data Management, Business Process Re-engineering, System Integration/Development, IT Governance and Portfolio Management, and Training and Education. His clients included the United States Air Force, United States Army, and the US Department of Health and Human Services.
Mr. Selvaraj received his Bachelor’s degree from West Virginia University in Psychology and his Masters of Science from Wright State University in Industrial and Organizational Psychology with a minor Human Factors Psychology. He is a graduate of Leadership Dayton in 2017 and he currently serves on the Board of Trustees for Goodwill Easter Seals Miami Valley.
A fun fact about Jon is that he was born in England and used to have a British accent.
Mr. Harvey joined the company in 2010. He oversees and manages the business and financial operations of the TACG Information Technology Optimization business portfolio. He is also a member of the Business Development and Pricing Teams. Mr. Harvey supports new business and existing business growth, pricing efforts, and leads the TACG Contract Vehicle portfolio.
Mr. Harvey has over 35 years of experience providing Information Technology (IT) solutions and services for customers in both the government and commercial sectors of the market. His experience spans the entire Program Management Lifecycle (PMLC) and Software Development Lifecycle (SDLC) phases supporting numerous IT programs and projects.
Keith earned his Bachelor of Science in Computer Science from Wright State University in Dayton, Ohio. Keith is a graduate of the Leadership Dayton in 2018, and currently serves as a We Care Arts Board member.
In his spare time, Mr. Harvey is an avid boater, karaoke singer, and history buff.
Ms. Vikan joined TACG in 2007. She currently oversees the TACG Human Capital Management portfolio.
Ms. Vikan has been working in the government consulting services industry since 1999. She has served in numerous roles supporting project management, acquisition support services, financial management, technical and process analysis, strategic planning, and business operations. She has extensive experience supporting projects and working with mission-critical information systems with the United States Air Force (USAF) and the Centers for Disease Control in Prevention (CDC).
Ms. Vikan earned her Bachelor of Business Administration and Computer Information Systems from Morehead State University. Ms. Vikan was a graduate of the 2014 Leadership Dayton program, was a 2014 Dayton Business Journal Forty Under 40 honoree, and received the inaugural Outstanding Community Board Service Award from the Dayton Chamber of Commerce in 2019. Additionally, she was a founding member of the Women In Defense (WID) Greater Ohio Valley Chapter; served on the Board of Directors as Secretary and Vice President; served a four-year term on the board for Dayton Art Institute; launched Cancer Hope Ministry; and was the creator and race director for the Cancer Crush 5k walk/run.
Ms. Vikan was a Division I athlete and attended college on a cheerleading scholarship. Currently, she works hard on being a cheerleader for her staff and co-workers.
Mr. Koch joined the company in 2015. As Director of Human Resources, he is responsible for the supervision and consultation to management on strategic staffing plans and team training and development. Mr. Koch implements the TACG Human Resources values of people, community, and excellence across the organization.
Russell has over 10 years of experience in the federal sector. Previously, he has worked as a Staffing Consultant and as a contractor at the U.S. Army Research Laboratory.
Mr. Koch is a certified SHRM-CP Human Resources professional and is a licensed Everything DiSC facilitator. He received his Bachelor of Science in History from Towson University.
Mr. Koch is a close community member of the Chesapeake Human Resources Association. An interesting fact about Russell is that he speaks some Farsi.
Mr. Green is the Director of Strategic Operations for TACG. He joined the team in 2015. Mr. Green is responsible for providing long-range strategic leadership and short-term planning for the areas of reporting, data analysis, systems, and technology enhancements. He drives the operational cadence of various business units and manages the definition, measurement, and tracking of key strategic and operational initiatives. Additionally, Mr. Green spearheads the management of TACG’s ISO 9001:2015 Quality Management System Certification.
Mr. Green is a retired United States Air Force (USAF) veteran with over 29 years of service. He held several senior positions leading USAF efforts, most recently as the Course Director and Lead Instructor for the Air Force’s Lean Six Sigma Black Belt course and as the Superintendent for the USAF Afloat Prepositioned Fleet. Steve brings over 25 years of process improvement experience to TACG. Further, Mr. Green is a licensed Everything DiSC facilitator, Lean Six Sigma Black Belt, Certified Federal Enterprise Architect, and Supply Chain Operations Reference Professional (SCOR-P).
Mr. Green is an avid supporter of the Montgomery Area Food Bank and St. Jude’s Children’s Hospital. He enjoys all types of fishing, especially saltwater fishing.