In this Wednesday, March 3, 2021 photo, container cargo ships are seen docked in the Port of Los Angeles. The pandemic has wreaked havoc with the supply chain since early 2020, when it forced the closure of factories throughout China. The cluster of ships offshore are perhaps the most dramatic symptom of an overwhelmed supply chain. Ships holding as many as 14,000 containers have sat offshore, some of them for over a week. But when all those trucks hit the road, there aren’t enough available when dockworkers are trying to unload the next ships in port.