The dispute traces back to June 2022, when Propak Systems, Ltd., a customer of Traffic Tech, Inc. (TTI), purchased a $135,870 cooler from Chart, Inc. for use in an energy processing project in North Dakota. Propak hired TTI to arrange the shipment from Keifer, Oklahoma to Watford City, North Dakota. TTI, in turn, contracted Landstar to handle the transport, under a longstanding agreement dating to August 2016.