Since 1997, Ms. Parnell has led the development of long-term relationships between small businesses and General Dynamics and the management of their Mentor-Protégé programs. Ms. Parnell's role provides for development of teaming relationships with small businesses in a variety of technical and customer-focused areas that support business development initiatives at General Dynamics Information Technology (IT). She implemented a business development approach to working with small businesses, and fostered an internal "Total Company Approach" to working with small companies. Her role extends into both capture and proposal development processes and includes coordination and support of Mentor-Protégé involvement.

Under her leadership, the company has received recognition for its efforts with small business, to include the DOD Nunn-Perry Award for excellence in the Mentor-Protégé program, the first two Corporate Champion Awards in 2005 and 2006 from the Veterans Administration for work with Service-Disabled Veteran-Owned small businesses, as well as others. As an integral member of the General Dynamics Small Business Committee, she played a leadership role in the development of a common registration portal, which received a General Dynamics Supply Chain Excellence award in 2012.

Ms. Parnell is a past co-chair of the AFCEA International Small Business Committee and continues to serve as a sub-committee chair. She currently serves as Chair of the General Dynamics Small Business Committee. She earned a bachelor's degree in Science from Queen's University (Kingston, ON) and a master's degree in Business Administration from Saint Mary's University (Halifax, NS). She is a former member of the Royal Canadian Mounted Police and has served as a Senior Officer in the Canadian Forces Naval Reserve.