This past Saturday, I got on the Chief Sealth Trail ( a MUP that's almost always empty ), and almost immediately there was a lot of broken glass all over the trail, from end to end. As I was slowing down, I saw a German shepherd charging at me. It was on the other side of a dilapidated, rusty fence. I wondered if there were any holes, and didn't want to take any time to look for one. Turns out Gatorskins are pretty resistant to flats...!