A funeral home worried an Air Force vet wouldn't get a proper burial. Thousands of strangers made sure he did.

(CNN)The thousands in attendance as Joseph Walker was laid to rest Monday couldn't tell you much about him -- except that he served his country.

Joseph Walker
Walker, born in 1946, was in the Air Force during the Vietnam War era and was discharged from service honorably.
He "was called by Our Heavenly Father on Monday, November 19th, 2018," his obituary reads. The obituary does not say what Walker's rank was.
    Gilbert Cavazos, funeral director at All Faiths Funeral Service in Austin, Texas, said All Faiths provided a wake and funeral for Walker. But his family were concerned about meeting the cost of the services.
    The funeral home said it would provide shelter for Walker until something could be worked out but, despite repeated efforts, it has since been unable to reach the family.
    "We have to just have closure now," said Cavazos. "This gentleman deserves this."

    A call to action

    Central Texas State Veterans Cemetery had a simple request.
    "We have the distinct honor to provide a full military burial for unaccompanied United States Air Force Veteran Joseph Walker," their Facebook post from January 24 read. "If you have the opportunity, please come out and attend. We do NOT leave Veterans behind."
    Word spread quickly as local media and others, including politicians, began to echo the call to action.
    "ATTN TEXANS," wrote CNN's own Jake Tapper. "No one is expected to attend the funeral for Joseph Walker, who served in the US Air Force 1964-1968."

    Military honors

    Car after car after car lined the roads in and around the cemetery.
    So many people showed up that vehicles were backed up onto a nearby highway. The ceremony started late to allow everyone to attend. Williamson County Sheriff Robert Chody, who dispatched units to assist with traffic for the burial,