In September, the militaries of the East African Community held joint exercises with AFRICOM, the U.S. Africa Command. Such exercises with American forces have become commonplace. The U.S. Defence Department is busily training the militaries of Mali, Chad, Niger, Benin, Botswana, Cameroon, the Central African Republic, Ethiopia, Gabon, Zambia, Uganda, Senegal, Mozambique, Ghana, Malawi and Mauretania. ECOWAS, the Economic Community of West African States, is considering asking the U.S. navy to help it out with its pirate problem. Most of the militaries of the African Union already communicate with American command-and-control equipment, requiring U.S. advisors. The overlapping entanglements have allowed the U.S. military to achieve deep penetration of the armed forces of most African nations.