Originally Posted by
ursine1
But... the FAA regulates it literally according to ABV. Which is all that really matters.

Which, and thank you for doing so

, proves my point that if you have alcohol above 24% ABV in your checked luggage, you need to let the check in agent know. If you want to know why it matters that it needs to be declared, other than "because the FAA said so", hopefully the information I provided will help.