In 2007, BAE Systems developed an extremely lightweight aluminum slat armor system called the LROD, which was initially used on the Buffalo MPV, and which was claimed to weigh half the amount of comparable steel designs.[1] BAE later equipped several US Army RG-31s with a variant of the LROD system, and also developed the system for its RG-33 vehicles, the Caiman and the JERRV. Slat armor is furthermore fielded on the American M1 Abrams as part of the TUSK urban warfare series. In the Syrian Civil War, ISIS, the Free Syrian Army and Syrian Army equipped their armored vehicles with homemade slat armor to protect from rocket propelled grenade impact.