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Bad shipper experience could result in long-term cargo diversion, according to port economist John Martin.
ILWU is planning a rally and march against police violence during its regular stop-work meeting.
Southwest Airlines cancelled some flights Tuesday after Monday's riots over alleged police misconduct.
Chicago-based SEKO has expanded in recent years into a full-service logistics provider with transportation, warehousing, supply chain, home delivery and e-commerce capabilities.
Announced on the heels of a port driver labor strike, Eco Flow will use "free-flow" to move containers out of terminals to off-dock yards.
Such an alliance could have a "competitive edge," according to industry consultant Drewry.