UNITED PARCEL SERVICE, INC., Plaintiff, Appellant, v. UNIÓN DE TRONQUISTAS DE PUERTO RICO, LOCAL 901, Defendant, Appellee. No. 04-2275.United States Court of Appeals, First Circuit.Submitted July 26, 2005. Decided October 20, 2005. Appeal from the United States District Court for the District of Puerto Rico, Jaime Pieras, Jr., J. Page 471 Pedro J. Manzano-Yates, Carlos […]