The LAV-25 (Light Armored Vehicle) is an eight-wheeled amphibious armored reconnaissance vehicle used by the United States Marine Corps. It was built by General Dynamics Land Systems Canada and is based on the Swiss MOWAG Piranha I 8×8 family of armored fighting vehicles. It entered service with the Marines in 1983. LAVs first saw combat during the Invasion of Panama in 1989, and continued service in the Gulf War, Iraq War, and the War in Afghanistan. They are 4-wheel drive (rear wheels) transferable to 8-wheel drive. They are also amphibious but are limited to non-surf bodies of water. While engaged in amphibious operations, the maximum speed is approximately 7.5 mph using equipped propellers. Typical land speeds are approximately 62.5 mph in either 4- or 8-wheel drive. The LAV-M or “Mortar” variant of the LAV-25 is fitted with opening doors on the top, inside it is fitted with an 81 mm M252 mortar, with 360° traverse, and a pintle-mounted M240E1 machine gun. It carries 99 81 mm mortar shells, and 1,000 rounds of 7.62 mm ammunition.