Complex sentence: In 1938 Los Angeles, California, a rocket pack designed by Howard Hughes is stolen from his factory by two members of mobster Eddie Valentine's gang, hotly pursued by FBI agents to an airfield, where one is killed, but the injured driver is caught.
Split into simpler sentences: In 1938 Los Angeles, California, a rocket pack designed by Howard Hughes is stolen from his factory by two members of mobster Eddie Valentine's gang. Hotly pursued by FBI agents to an airfield, one gangster is killed, but the injured driver is caught.