FILE - In this April 26, 1956, file photo, David Greenglass sits beside Deputy U.S. Marshal Joseph Oreto, left, at the Senate Internal Security in Washington. The former Army sergeant and Los Alamos bomb project employee, whose testimony led to the conviction and execution of his sister, Ethel Rosenberg and brother-in-law, Julius Rosenberg, died on July 1. He was 92. (AP Photo/Henry Griffin, File)