discussed Cited "see" Richmond, Fredericksburg and Potomac Railroad Company v. Brotherhood of Maintenance of Way Employees See Brotherhood of Railroad Trainmen v. Jacksonville Terminal Co., 394 U.S. 369 , 376 n. 10, 89 S.Ct. 1109 , 1114 n. 10, 22 L.Ed.2d 344 (1969) 5 We do not read Brotherhood of Railroad Trainmen v. Chicago River and Indiana Railroad Co., 353 U.S. 30 , 77 S.Ct. 635 , 1 L.Ed.2d 622 (1957), or Piedmont Aviation v. Airline Pilots Association, 416 F.2d 633 (4th Cir.1969), cert. denied, 397 U.S. 926 , 90 S.Ct. 924 , 25 L.Ed.2d 105 (1970), relied upon by RF & P, to dictate a different conclusion.

discussed Cited "see" REA Express, Inc. v. Brotherhood of Railway, Airline & Steamship Clerks (2×) See Piedmont Aviation, Inc. v. Air Line Pilots Ass’n, Int’l, 416 F.2d 633 (4th Cir. 1969), cert. denied, 397 U.S. 926 , 90 S.Ct. 924 , 25 L.Ed.2d 105 (1970); Chicago & N. W.

cited Cited "see, e.g." Eastern Air Lines, Inc. v. International Ass'n of MacHinists & Aerospace Workers (In Re Ionosphere Clubs, Inc.) See also, Piedmont Aviation, Inc. v. Air Line Pilots Ass’n Int’l, 416 F.2d 633, 638 (4th Cir.1969), cert. denied, 397 U.S. 926 , 90 S.Ct. 924 , 25 L.Ed.2d 105 (1970); Brotherhood of R.R.