406 U.S. 272 92 S.Ct. 1571 32 L.Ed.2d 61 NATIONAL LABOR RELATIONS BOARD, Petitioner,v.BURNS INTERNATIONAL SECURITY SERVICES, INC., et al. BURNS INTERNATIONAL SECURITY SERVICES, INC., Petitioner, v. NATIONAL LABOR RELATIONS BOARD et al. Nos. 71?123, 71?198. Argued Jan. 13, 1972. Decided May 15, 1972. Syllabus Wackenhut Corp., a company that had provided plant protection service […]