I had signed for and and checked out an M60A1 main battle tank. It had the M9 bulldozer blade attachment. I was was hauling ass across country because that’s what you do with tanks. When the dozer blade dropped. (It happens.) I slammed my face forward on the drivers hatch. I was wearing a helmet no flesh met steel. But I saw a shadow fly over. It was my buddy in the TC seat. Momentum is a bitch. He was okay. We were more careful after that.