. "2010-06-25Z"^^ . "Roy S. Estess"@en . . "Estess, Roy S"@en . "2010Z"^^ . "Roy S. Estess was the fourth director of the Stennis Space Center (SSC), having held a variety of managerial positions at the center that prepared him to lead the facility during the dynamic years of the 1990s."@en . "American engineer" . "1939Z"^^ . . . . "1939-01-05Z"^^ . .