Complex sentence: Before the Rangers dropped, the site had been softened up by B-2 Spirit stealth bombers; the Rangers met almost no resistance, except for a solitary Taliban fighter who was quickly killed which secured the objective.
Split into simpler sentences: Before the Rangers dropped, the site was been softened up by B-2 Spirit stealth bombers. The Rangers met almost no resistance, except for a solitary Taliban fighter who was quickly killed, securing the objective.