Complex sentence: In the ensuing crossfire, Rance is killed by the shot from Maguire's shotgun, Maguire is injured by flying glass shards, and Sullivan escapes with the ledgers; as Sullivan flees, Maguire shoots him in his left arm.
Split into simpler sentences: In the ensuing crossfire, Rance is killed by the shot from Maguire's shotgun, Maguire is injured by flying glass shards, and Sullivan escapes with the ledgers. As Sullivan flees, Maguire shoots him in his left arm.