COLUMBUS, OHIO - A man opened fire in an Ohio nightclub Wednesday night, killing a heavy metal guitarist and three others before a police officer shot him to death. The unidentified man climbed onto the stage at the Alrosa Villa just as the band Damageplan was opening its show, firing several shots at guitarist Dimebag Darrel Abbott. Abbott was killed, witnesses said. The gunman also killed a club bouncer and two other people before a police officer arriving at the scene shot and killed him. Two other people were wounded as the man fired into the crowd before police arrived....