Zachary Parker President, CEO, and Board Director Kathryn JohnBull Chief Financial Officer Mary Dowdall President, Advanced Mission Services Diane Yarnell President, Health IT Billy Burnett President, National Security Programs Jeanine Christian President, Public Health & Scientific Research Dr. Sandra Halverson Vice President, Chief Scientist Leslie Graves Senior Vice President, Human Capital Operations Kevin Wilson Corporate Executive, Strategic Advisor David Affeldt President GRSi Operating Unit
