Off topic, but I just have to say it. It's so easy to berate the US Postal Service however I wish each person had the opportunity to do what I have done so many times when I was working -- for my new models!
Sitting up there at 30-40,000 ft on some of those nights when the air was clear for hundreds of miles and one could see big city lights on the horizon hundreds of miles away, and so many thousands of lights down there through the farmlands, in the hills, valleys, and mountains and then I think, the USPS delivers mail to all these places 6 days a week, almost every week. There are so few foul-ups. Mail comes and goes every day and arrives within a few days. My bills always get paid. I have always received my checks that are mailed to me. Scam mail comes by the ton! It has to be the most massive operation I can think of.

Actually I just wish all businesses operated with just 80% of the efficiency of the USPS. My ex-employer did not and does worse by the day.