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.

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.

Bruce Willis made his first public appearance since his dementia diagnosis, greeting Los Angeles firefighters fighting wildfires. His wife, Emma Heming, posted the heartfelt moment on Instagram, emphasizing Bruce's gratitude and their family's ongoing battle with his illness.