American relief workers trapped in Bor, South Sudan, were evacuated Sunday aboard United Nations helicopters that took them to the capital city of Juba. Three U.S. military aircraft sent to evacuate the Americans from Bor on Saturday came under small arms fire from undetermined forces forcing the mission to be aborted. Four U.S. military service members aboard were injured by the fire. “This morning, the United States — in coordination with the United Nations and in consultation with the South Sudanese government — safely evacuated American citizens from Bor, South Sudan, ” said State Department spokesperson Jen Psaki in a...