James E. Webb
During his two-year tenure, he oversaw the Mercury program and planning for Project Gemini and the Apollo program. Possibly due to tensions with NASA Administrator James E. Webb over the extent of his authority to shape and schedule the various facets of the space program, he resigned in 1963 to become an executive at Raytheon. At that company he is credited with helping develop several of that company's missile developments, including the Patriot antiballistic system.