Inventories were running down and hitting zero before March 11.. It certainly won't help, of course, because enTourage would be something like a Tier 29 customer...

EDIT: If you want a steady supply, the units would have already been manufactured by March 11 and merely requiring shipping and redistribution in the US shortly thereafter. I.e., there's a lead time involved of at least a month I would say, so these supply issues were in the making already at the end of February...