A typical USPS tracking number contains 22 numbers. I now have a string of those numbers permanently lodged in my memory, since we chose to purchase airline tickets to Asia-Pacific before receiving our passports and visas back in the mail from the embassy. Call it the newbie jitters, but we were on the edge of our seats for over a week, until that return tracking number showed up in the system. The envelope arrived yesterday, and we’re rejoicing to have those four necessary little booklets back in hand. We’re thankful for a weight off our minds in these final days of preparation!