sentences:  The gunman, identified as Charles Roberts IV, aged 32, was a milk tanker truck driver who served several Amish farms in the Nickel Mines area (including some of the victims' families).He had three children and a wife, for whom he left four separate suicide notes.When State Police Commissioner Jeffrey B. Miller interviewed Roberts' co-workers, they claimed to have noticed a "change" in him over the months leading up to the shooting.