A key figure of the My Lai massacre during the Vietnam War has passed away at the age of 81. Former Army Captain Ernest Medina passed away but no cause of death was given. Medina, of Marinette, was in charge of troops who under his command killed hundreds of civilians in the small village of My Lai in 1968. The soldiers were told they were to meet Vietcong resistance but never did. He was acquitted of the massacre of 504 unarmed villagers. Medina was laid to rest Monday.