I flat towed an M818 behind a M936 yesterday at 55 mph on flat ground and slowed down to 40 on some upgrades that slowed me down. Yes, I had chained the towed truck to the pulling truck and yes, it all went good. I've towbared dead trucks for both personal and National Guard use. The pins were fine and I've never sheared on or had to have the chains get the truck back under control. The chains are a safety precaution and should always be used. In the RARE EVENT A PIN LET'S GO, and I stress RARE EVENT!!! A Deuce pulling a Deuce is not likely to put the stress that a 936 pulling a tractor is going to put on a pin!