Eustis Engineering Services, L.L.C., has announced several executive changes. Eustis Engineering has named John (Randy) Eustis, the son of founder J. Bres Eustis, as President. Additionally, former President William (Bill) Gwyn was named Chairman of the Board of Directors, Gwendolyn (Gwen) Sanders was appointed Executive Vice President (Engineering), and Larry Rome was named Vice President (Operations).