It's been 14 business days since he sent it out.

I'm getting a bit worried.
If USPS, in all their glory, sent it to the wrong house, is there anything that can be done? Such as find out where it might have been delivered to?

USPS.com shipping calculator says it should take 6 business days.

A friend of mine asks me everyday if it came in; it's almost became a bad joke.