Original sentence: ) during the 2002 campaign in Afghanistan.50 BMG sniper rifle was used by Canadian Corporal Rob Furlong to bring off the longest-range confirmed sniper kill in history, when he shot a Taliban insurgent at 2,430 meters (2,657 yards/1.51 mi.The previous record for a confirmed long-distance was set by US Marine sniper Carlos Hathcock in 1967, the distance was 2,286 meters (2,500 yards) or 1.42 miles
Edited sentence: 50 BMG sniper rifle was used by Canadian Corporal Rob Furlong to bring off the longest-range confirmed sniper kill in history, when he shot a Taliban insurgent at 2,430 meters (2,657 yards) during the 2002 campaign in Afghanistan.The previous record for a confirmed long-distance was set by US Marine sniper Carlos Hathcock in 1967, the distance was 2,286 meters (2,500 yards) or