POCATELLO — A parade float honoring the Bill Parrish family will roll through Pocatello’s Fourth of July Parade this year, offering a tribute to four family members who died from carbon monoxide poisoning in 2014 and carrying a safety message that has grown into a decade of community advocacy.

In 2014, Bill and Ross Parrish, along with their sons Keegan, 14, and Liam, 12, were found dead in their Pocatello home. Investigators determined that a faulty gas appliance had leaked carbon monoxide into the residence, which lacked functioning carbon monoxide detectors.

At the time, the two oldest children, Jensen and Ian, were away on Latter-day Saint missions. In the years since, they have channeled community support into the No C.O. Foundation, dedicated to carbon monoxide poisoning prevention.

The float is built and sponsored each year by the Chubbuck Lions Club, which has organized the accompanying Bill Parrish Family 3-on-3 Basketball Tournament for 13 years.

“It’s a bit of a tradition, kind of a staple, I think, for parade attendees,” said Fred Parrish, Bill’s cousin and assistant treasurer of the Chubbuck Lions Club.

The float’s centerpiece — a standard, backboard and hoop where people can take shots from the crowd — stays the same from year to year, though the display is dressed up differently each year to match the parade’s theme. Its banners feature a photo of the Parrish family alongside the tournament’s logo.

The float and tournament serve a purpose beyond entertainment.

“The whole point of the tournament is to raise awareness of the general issue of carbon monoxide poisoning,” Fred said. “The tournament is a means to an end, not the end in itself.”

While Fred could not confirm whether Jensen and Ian specifically will be present, he said family members typically attend, including the brothers’ siblings and cousins.

The foundation’s outreach has already been credited with saving lives. Pocatello resident Monica Keller said a No C.O. school safety assembly inspired by the family protected her own household.

“Our alarm went off in the middle of the night. I wanted to ignore it and go back to bed,” Keller said.

Her daughter refused to go back to sleep and got the family out of the house. Firefighters later confirmed they would not have survived until morning had they stayed.

The Bill Parrish Family 3-on-3 Basketball Tournament will run July 31 to Aug. 1 in the north parking lot of the ICCU Dome in Pocatello. Registration is open through Thursday, July 30, at 11:59 p.m. Attendees can also access free carbon monoxide detectors and safety information, along with food trucks and shaded seating.

Teams can register at https://www.chubbucklions.org/3on3register.