Original sentence: Afterwards, he and a team of CIA local mercenaries then escaped the Chinese, in a months-long horse trek across the Himalaya mountains; he was killed within miles of Lhasa city, Tibet Autonomous Region—yet his team delivered the intelligence to headquarters
Edited sentence: Afterwards, he and a team of CIA local mercenaries then escaped the Chinese, in a months-long horse trek across the Himalaya mountains; he was killed within miles of Lhasa, Tibet — yet his team delivered the intelligence to headquarters