-
Now Playing: Shriver Report Gives a Face to Alzheimer's
-
Now Playing: A Woman's Nation Takes on Alzheimer's
-
Now Playing: Legendary Brooklyn Dodgers pitcher dies at 92
-
Now Playing: The latest development in the Jussie Smollett attack
-
Now Playing: Close-up whale breach in Hawaii
-
Now Playing: World-renowned fashion designer Karl Lagerfeld dies in Paris
-
Now Playing: Duchess Meghan Markle in NYC
-
Now Playing: Scare at San Diego SeaWorld
-
Now Playing: Ex-NFL player killed over a parking spot in Colorado
-
Now Playing: Massive winter storm moving from west to east
-
Now Playing: New report on alleged attempt by Trump to influence investigators
-
Now Playing: New details in Kelsey Berreth case
-
Now Playing: Bernie Sanders joins the 2020 presidential race
-
Now Playing: US mother calls move to Syria, marrying ISIS fighters a 'mistake'
-
Now Playing: Video: Tulsa police pursue suspected stolen car with kids inside
-
Now Playing: Police in California searching for driver who struck 7-year-old girl
-
Now Playing: Napkin and genealogy site leads to 1993 Minnesota cold-case arrest
-
Now Playing: US sailor kissing nurse in famous WWII photo dies
-
Now Playing: Police bodycam captures confrontation with knife-wielding man
-
Now Playing: Possible motive revealed in Jussie Smollett alleged attack: Source