Black Hawk is a term used to refer to several different things. In this crossword, it refers to a U.S. military helicopter, the Sikorsky UH-60 Black Hawk. SOMALIA is a country in East Africa, and Mogadishu is its capital city. SACS, SAC, and SAUKS are all acronyms for Native American tribes, specifically the SAC and Fox Nation, the SAC and Fox Tribe of the Mississippi in Iowa, and the Sauk and Fox Nation. ROTOR and Ridley are both parts of a helicopter, the ROTOR being the main rotating part of the aircraft and the ridley being the tail ROTOR.