All nine crew members of a rescue helicopter which crashed on an eastern Japan mountain were confirmed dead Saturday, while the government's transport accident investigation panel started its probe at the accident site."For some reason, the helicopter appears to have flown at lower altitudes and hit trees," a panel investigator said of the area near the prefectural border of Gunma and Nagano where the Bell 412EP went down Friday.Local police also checked the site. The helicopter had made a sharp turn before it went missing, according to local authorities.Eyewitnesses said the helicopter was…READ FULL ARTICLE