In 2015, a woman was shot by her husband.  Her husband was diagnosed 2 years prior with a dementia disease.  He was a retired Police Chief and had access to his firearm.  He shot her during a moment of confusion and paranoia. There is no positive outcome for a person who owns a firearm and has a diagnosis of some form of dementia, more appropriately called a major neurocognitive disorder.  Dementia is a set of symptoms including poor judgment, memory loss, and decreased ability to function to name a few.  Hallucinations and delusions may be a part of that list