Ultra Heavy-Lift Amphibious Connector
The U.S. Marines are able to think outside the box. the Ultra Heavy-Lift Amphibious Connector or UHAC is am amphibious vehicle designed to go from ship to shore with heavy loads.

The Marines build a half-scale prototype which featured an air-filed track system which made it buoyant in the water and able to propel itself on the land through sand, mud and marshland.

No decision has been made if a full scale UHAC will be manufactured.