4 kids the oldest might be 20 and the youngest maybe 13. No supervision they know what needs to be done and get after it. They are Amish so I've held back taking pictures while they work as I don't want to upset or offend them. They used a skid steer to lift them and had one guy on each side to get them anchored.
Today most of the metal is up, they are 2 sheets short, and don't have the windows to install. So they split up 2 of them started on my garage roof and the other two are finishing up what they can do on the barn.
I was a little worried at first when I saw how young they were - but after the building inspector told me he wished all crews did half as good of a job as thees kids. He was impressed.