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.

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.

Bruce Willis thanks first responders for their efforts saving homes and lives from the Southern California wildfires. His wife, Emma Heming Willis, shared video from the moment on Instagram. Various media outlets say this is the first time the actor has been seen out in public since 2022,