All Nippon Airlines has received Japanese regulatory approval to link up with United Airlines on air freight flights.
A dozen containerships are anchored outside the ports of Los Angeles and Long Beach.
Port executives say mediation 'has become a critical and necessary tool' in the West Coast labor negotiaitons.
Teamster-supported strikers end labor action in Southern California,
The ILWU and ILA will likely have concurrent contract negotiations, making cargo diversion difficult, an NRF official said.