Five environmental workers on their way to help following a metal plant explosion in Ohio were killed as a small plane crashed near the Clinton National Airport in Arkansas, say officials.
官员说，一架飞机在阿肯色州克林顿国家机场附近坠毁，五名环保工作者在前往俄亥俄州一家金属厂爆炸后前往提供帮助的途中遇难。