Complex sentence: Some estimates suggest the Taliban has retaken more than 80% of Helmand province, according to Defense Department statistics 9 U.S. service members were killed in action and another 70 were wounded there by hostile activity throughout 2016.
Split into simpler sentences: Some estimates suggest the Taliban has retaken more than 80% of Helmand province. According to Defense Department statistics 9 U.S. service members were killed in action and another 70 were wounded there by hostile activity throughout 2016.