People held up signs as MacKay's procession made its way from the San Manuel Amphitheater back to Mountain View Cemetery. Three children waved a brightly colored sign that read, "Thank you for protecting us," as their father saluted as MacKay's casket was driven by.
Julie Quezada waved an American flag as the precession moved onto Waterman Avenue.
A small group of people waited at the mortuary holding flags and signs. Among them was Enerio Machado who drove from Riverside to pay his respects to MacKay and he said to show the fallen detective's family support.
Machado said he wants people to remember that law enforcement put their lives on the line every day for the public.
Although the internment was private, dozens of friends, family and sheriff's department colleagues still spilled onto the sidewalk of the mortuary.
Larry Watson of Highland said he wanted to attend the services but couldn't make it so he decided to come to the mortuary.
"It was a sad day and I just want to welcome our soldier home," said Watson who was wearing a shirt with the American flag.