UPDATE: Obama Ends Africa Trip in Tanzania, Voices Confidence in FuturePresident Barack Obama and the First lady Michelle Obama wave from Air Force One upon their departure from Julius Nyerere International Airport in Dar Es Salaam, Tanzania on July 2, 2013. Just over three years later, al-Qaida attacked the United States directly on home soil on September 11, 2001. In the final event of his Africa trip, Obama visited a formerly idle power plant brought back to life through joint Tanzanian-U.S. efforts, highlighting his new initiative to double access to electricity in Africa. President Kikwete thanked President Obama for “invaluable” support in Tanzania’s development efforts, from education to food security and HIV/AIDS prevention. President Obama and his family depart early Monday for Tanzania, the final stop on his three-nation Africa tour.