UNITED STATES, APPELLEE, v. MANUEL AMADO GUERRERO, DEFENDANT, APPELLANT, UNITED STATES, APPELLEE, v. CRISPINIANO OSPINA, DEFENDANT, APPELLANT, UNITED STATES, APPELLEE, v. ORLANDO PILCO, DEFENDANT, APPELLANT, UNITED STATES, APPELLEE, v. MANUEL RIVAS, DEFENDANT, APPELLANT, UNITED STATES, APPELLEE, v. DIMAS HERNANDEZ, DEFENDANT, APPELLANT. Nos. 96-1324, 96-1325, 96-1326, 96-1327, 96-1651.United States Court of Appeals, First Circuit. May 30, […]