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Los Angeles Mayor Eric Garcetti's office says there are "plenty of trucks and drivers."
Maersk Line said the containership was fired upon and seized because of a dispute over 10 containers transported a decade ago.
Rickmers, which manages the ship for Maersk said Iranian navy fired "warning shots" at Marshall Islands-flagged Maersk Tigris.
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.
Crew on Maersk Tigris remains safe and are in good spirits, according to the Danish ocean carrier.
Grand Alliance chassis pool will be terminated and Direct ChassisLink will contribute those assets to its expanded pool.