My father-in-law came over today, he drove convoys in Iraq. Usually what I would call a 6x6 but he had another name for it. But he drove a humvee quite often. He even got a metal for helping design a door hinge that would allow the armored doors to work properly.
Anyways, he went over the humvee with me, answering any questions I had. Over each wheel it has "tp 20" or "tp 35". He asked his son what that meant. His son said "Tennessee patrol?" Which was better than I was going to
Come up with. Apparently that's "tire pressure". Anyways, lots of good info he gave me, he was smiling and had some bad stories but made him open up and talk. It was good.