Willis was diagnosed first with aphasia -- a condition where the brain's ability to understand or express language is impaired, according to the National Institutes of Health -- in 2022 before receiving an additional diagnosis of frontotemporal dementia in 2023, according to his family.

Wife Emma Heming Willis shared a black-and-white Instagram Reel of the 69-year-old 'Die Hard' star shaking hands with emergency workers.

In an Instagram post shared by his wife Emma Heming Willis on Thursday, Willis can be seen shaking hands with a Los Angeles police officer.