UNITED STATES OF AMERICA, APPELLEE, v. EFRAIN NUNEZ, DEFENDANT, APPELLANT. No. 92-2356.United States Court of Appeals, First Circuit.Heard August 3, 1993. Decided March 24, 1994. Thomas R. Lincoln, with whom Law Offices of Thomas R. Lincoln, San Juan, PR, was on brief, for appellant. Esther Castro-Schmidt, Asst. U.S. Atty., with whom Charles E. Fitzwilliam, U.S. […]