The Leatherman dispute stems from a 2012 contract revision between the ILA and the U.S. Maritime Alliance, a consortium of container lines that hires the union members to load and unload cargo from its vessels.

Source: https://www.postandcourier.com/business/charlestons-port-agency-takes-early-loss-in-labor-dispute-appeal/article_3a13cbe8-a7cb-11ed-9229-1f2ffa332fb1.html

The ruling threatens the so-called hybrid workforce model used at the ’s other terminals, where SPA workers operate the cranes while the ILA members move cargo through the yard.

Source: https://www.postandcourier.com/business/boeings-sc-made-dreamliners-back-in-the-delivery-queue-volvo-s60-sales-sag/article_172bac12-bf50-11ed-9bc5-9f1fc93081d3.html