Mine went to California.
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Both units were returned to Bitmain CA under warranty repair tickets and were replaced directly from China in about a week.
We currently have 43 S15's running at the commercial farm on 208v, some for nearly 2 months, without any failures or issues though we did get one unit that had a bad hash board. Bitmain also replaced that unit under warranty in about a week.
One note - all 3 of our warranty replacement units seem to have come out of China stock and do not have the power rail covers, they are the open rail design. All other units we received have the rail covers.
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Found the user and one of the posts I was referencing above ^.