A crazed ex-fireman allegedly launched into a violent rampage after his ex-girlfriend dumped him — and was “ready for war” when he drove eight hours intending to kill her family in New Jersey, according to prosecutors. Brian John Lanzim, 37, was armed with two guns and a bulletproof vest when he headed from Bangor, Maine to South Toms River, after the mother of his two kids broke up with him and filed a temporary restraining order against him, authorities said. He allegedly wanted to kill off