The M1 Abrams is an American third-generation main battle tank named after General Creighton Abrams. Highly mobile, designed for modern armored ground warfare, the M1 is well armed and heavily armored. Notable features include a powerful AGT1500 multifuel turbine engine, sophisticated composite armor, and separate ammunition storage in a blow-out compartment for crew safety. Weighing nearly 68 short tons (almost 62 metric tons), it is one of the heaviest main battle tanks in service.