Complex sentence: Rambo saves them from being executed by hijacking Tint's jeep mounted with an M2 Browning machine gun, where he ignites a massive shootout in the jungle and guns down much of Tint's army and a firefight ensues between the mercenaries and Tint's soldiers.
Split into simpler sentences: Rambo saves them from being executed by hijacking Tint's jeep mounted with an M2 Browning machine gun. Rambo guns down much of Tint's army and a firefight ensues between the mercenaries and Tint's soldiers.