At 19:25, EDT, UPS took possession of the package.
Apparently, APC figured out how to ship a replacement unit to a customer.
@drhicom The tracking information shows it to be in Middletown, PA.
But I doubt that Alvin works from there.
Tomorrow, I should have my next APC UPS. I will sleep better, knowing that only the best equipment will be supporting my daily-driver computer.