Not guilty plea for driver in crash that killed HFD veteran

Christopher Raymond Helmlinger turns to exit Kona Circuit Court Judge Melvin H. Fujino's courtroom Thursday after pleading not guilty to manslaughter and second-degree negligent homicide charges filed in connection with a May 22 crash that killed 49-year-old Kailua-Kona resident David Mahon. (Laura Ruminski/West Hawaii Today)
A memorial centered by a photo of David Mahon and his 10-year-old son, Dylan, has been set up in memory of the Hawaii Fire Department veteran killed in a multiple-car crash May 22 on Mamalahoa Highway in North Kona. (Chelsea Jensen/West Hawaii Today)

KEALAKEKUA — A Waimea man accused of the traffic death of a Hawaii Fire Department captain has pleaded not guilty to charges stemming from the May 22 crash.