EDIT: Sorry, misread, thought you were getting duty-free in NRT, in which case below applies.

Except there's an update where TSA changed its policy to allow duty-free liquid purchases, if they are sealed in a tamper-evident bag. There's a discussion in the security forum about it.

Otherwise, yes, US rules for US-bound flights. (And of course, we're assuming your home is in the US... yes?)