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 recently made his first public appearance since 2022 after being diagnosed with frontotemporal dementia. In an Instagram post, his wife, Emma Heming Willis, shows the former actor, who grew up in Salem County, shaking hands and greeting first responders battling the ongoing California wildfires.