Airborne Bulldozer (Tractor Crawler) built for the US Government. The CA-1 was built by Clark Equipment Co. Buchanan, Michigan, USA. CA-1 was a small Dozer that could be parachuted into or landed by glider to remote areas where required. The CA-1 was Powered by a Waukesha FC four cylinder water cooled engine. Total weight with blade of approx. 5000 lbs.C-1-AB-S-PA-FV. Photos provided by owner (Steve).