Tallulah Willis, the actor's daughter, wrote that a video clip of the moment made her "heart so freaking full."

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.

Last month, Bruce's ex-wife, Demi Moore, gave an update on his well-being amid his battle with dementia. In an interview with CNN, the 62-year-old actress explained that the actor is "in a very stable place," but it hasn't been easy watching him struggle.

Bruce Willis, who has remained largely out of the spotlight after being diagnosed with FTD, shares rare video thanking first responders

In a recent Instagram post shared by his wife, Emma Heming Willis, Bruce Willis speaks with Los Angeles Police officers and shakes their hands.

Bruce Willis, who is battling dementia, thanked LA police officers in the midst of the deadly wildfires in the area.

"Bruce never missed a chance to show his gratitude with a heartfelt handshake," the actor's wife Emma Heming says.

Bruce Willis retired from acting in 2022 and was then diagnosed with frontotemporal dementia. He's rarely been seen in public since then.

In what’s believed to be his first public sighting since retiring from acting, Bruce Willis made sure to thank first responders battling the blazes in Los Angeles.

Bruce Willis’ wife, Emma, shared video of the iconic actor thanking first responders as they work to protect the public from deadly Los Angeles area wildfires.

Demi Moore is reportedly making her ex-husband Bruce Willis' 'peace and comfort' her 'central mission' as he continues his battle with frontotemporal dementia