David Greenglass, right, 28-year-old former Army sergeant, is escorted from Federal Court in New York, Oct. 18, 1950 en route to the Tombs Prison, by Deputy Marshall Eugene Fitzgerald. Greenglass pleaded guilty in Federal Court on the charge of conspiracy in time of war to convey secret government defense information to Russia. He had worked at Los Alamos, N.M., on the atom bomb. (AP Photo/John Lindsay)