Appeal from D. C. Mont. Probable jurisdiction noted. Motion of appellees for expedited briefing schedule and oral argument granted. Opening brief for appellants is to be filed with the Clerk on or before January 15, 1992. Brief for appellees is to be filed with the Clerk on or before February 12, 1992. Reply brief for appellants is to be filed with the Clerk on or before February 21, 1992. Case set for oral argument during the session beginning February 24, 1992.