This video depicts testing of a 1/5 scale demonstrator of the Captive Air Amphibious Transporters (CAAT). The CAAT has air-filled pontoons on a tank tread-like design, enabling them to carry containers over water and directly onto shore.
The vehicle is part of DARPA‘s Tactically Expandable Maritime Platform (TEMP) program, which seeks new sea and air delivery systems to enable direct support to disaster zones from offshore container ships. All technologies developed under TEMP are transportable using standard 20-foot or 40-foot commercial shipping containers.
This technology demonstrator is jointly funded with the Office of Naval Research, who is looking at it for potential use as an amphibious transport for the Marines/Navy.