I would not bother folks seeing dead people. Tell them it’s a vision of Heaven. Theologically possible and does no harm.
Omaha Beach on that day would not have been my vision of Heaven, and i seriously doubt it was his.
My Mother simply wasn't listening closely enough to realise what was going on. i realised that he was re-living that day.
He acquired two more Purple Hearts before that war was over. The last one cost him his right eye from complications 25 years later.
He didn't want to live the way he was, and did his best to make sure he didn't without committing suicide.
My mother died two years later, in large part due to grief. They only had six days together after she retired.