Nos. 97-2709, 97-3020 ARGUED MARCH 31, 1999 DECIDED MAY 4, 1999 Petition for Review of an Order by the National Labor Relations Board and Cross-Application for Enforcement of the, Order. No. 13-CA-32719. Cameron Pierce, J. Roy Weathersby (argued), Littler Mendelson, Atlanta, GA, for Petitioner, Cross-Respondent. Elizabeth Kinney, National Labor Relations Board, Chicago, IL, John D. Burgoyne, Rachel Gartner (argued), National Labor Relations Board, Appellate Court, Enforcement Litigation, Washington