The Landing Craft Air Cushion (LCAC) is a type of amphibious vehicle used by the military to transport troops and equipment from ships to shore. It operates on a cushion of air, allowing it to travel over various terrains, including water, sand, and mud. This capability makes it especially useful for beach landings and operations in shallow waters. LCACs are designed to carry heavy loads, including military vehicles and supplies, and can reach speeds of up to 40 knots. They are typically deployed from larger vessels, such as amphibious assault ships, and play a crucial role in modern naval operations.