ERIE, Pa. (AP) - An alleged militia leader who authorities claimed built a bunker on his land and stockpiled weapons for an apocalyptic showdown with federal agents pleaded guilty Tuesday to weapons offenses. George Bilunka, 59, admitted possessing unregistered firearms - two homemade land mines, a modified rifle and a homemade Sten machine gun. He also acknowledged that he and another alleged militia leader sold a copy of a Sten gun - a British-made World War II 9 mm machine gun - to an undercover federal agent for $300. His attorney, David Ridge, said Bilunka agreed to plead guilty because...