FILE - In a March 24, 1994 file photo, U.S. soldiers board a C-5 transport plane bound for Dover Air Force Base in Delaware, at Mogadishu, as the U.S. military's presence in Somalia winds down. By the time U.S. military forces left Somalia in 1994 after entering the lawless nation more than a year earlier to stop a famine, 44 Army soldiers, Marines and airmen had been killed and dozens more wounded. But the U.S. has come back, using special forces advisers, drones and tens of millions of dollars in military aid to combat a growing and multifaceted security threat. (AP Photo/John Moore, File)