 Thorson arrives when Mason attempts to kill him with an M-16 assault rifle.Unarmed after being deprived of his weapon, Thorson lures Mason into one classroom where he floods the room with flammable gas where once Mason opens fire, the sparks ignites the gas and blows up the room with Mason in it.Having dealt with Mason, Thorson immediately needs to rush Dotty to the hospital when she begins to go into labor.