The death toll from the crash of a U.S. helicopter in Afghanistan has risen to 18, the military said Saturday, after the remains of two more American soldiers were found among the wreckage. The two soldiers were initially listed as missing after the CH-47 Chinook crashed during a sandstorm on Wednesday near Ghazni, 130 kilometers (80 miles) south of the capital, Kabul. Thirteen U.S. service members and three civilian contractors were previously confirmed dead in the crash, which officials blamed on poor weather, the deadliest incident for Americans since the fall of the Taliban in 2001. Lt. Cindy Moore, a U.S. spokesman, said the remains of the last two soldiers were found on Friday and that all the remains had been flown to the main American base at Bagram, north of Kabul. From there, they will be flown to the U.S. air base in Dover, Delaware, for identification, Moore said.