McIntyre was last seen in Hopkins Park, Illinois at 11:00 a.m. on October 4, 2006. He slipped out of his house without being seen and has never been heard from again and an extensive search of the local area turned up no sign of him.

McIntyre had no identification with hims at the time of his disappearance. He worked as a bus driver for the Chicago Transit Authority for over thirty years, and prior to his disappearance he had spoken to wanting to travel to Chicago. He had lived there until he was diagnosed with Alzheimer's Disease and his family decided he'd be better off in his daughter's Hopkins Park home. Few details are available in his case.