Horn of Africa displays the greatest diversity, a sign often viewed to represent a geographic origin. The Horn of Africa is also the place where the haplogroup E1b1b originated from, Christopher Ehret and Shomarka Keita have suggested that the geography of the E1b1b lineage coincides with the distribution of the Afroasiatic languages. Genetic analysis done on the Afroasiatic speaking population further found that a pre-agricultural back-to-Africa migration into the Horn of Africa occurred through Egypt 23,000 years ago and it brought a non-African ancestry dubbed Ethio-Somali in the region. Together with northern Somalia, Djibouti, the Red Sea coast of Sudan and Eritrea is
Combined Joint Task Force – Horn of Africa and regional stability and security. Regional stability is increased through capacity-building operations such as civil affairs and military-to-military training; engineering and humanitarian support; medical, dental, and veterinarian civic action programs (MEDCAP, DENTCAP, VETCAP); security training for border and coastal areas; and counter-IED (C-IED) integration training. About 1,800 personnel from each branch of the U.S. military, civilian employees, and representatives from coalition and partner nations make up CJTF-HOA. CJTF-HOA was established at Camp Lejeune, North Carolina on October 19, 2002. In November 2002, personnel embarked to the region aboard USS "Mount Whitney" and arrived at the Horn of Africa on December