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 made a rare public appearance to thank LA firefighters, as shown in a video shared by his wife, Emma. Diagnosed with frontotemporal dementia in 2022, Bruce's family, including ex-wife Demi Moore and their children,

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.