6-5. Wrongful Interference. Southard was stranded in Hawaii as the result of an
airline strike. he had purchased a round-trip ticket before leaving his home in Denver. He
sued the union for tortious interference with his contract with the airline and sought to
recover the additional expense he incurred on another airline. Was the union liable to Mr.
Southard? [International Association of Machinists v. Southard, 170 Colo.119, 459 P.2d 570
(1969)]