Now Playing: Thanksgiving Weekend Ends on a High Note

Now Playing: Healthy Holiday Gift Ideas

Now Playing: Deal of the Day: Hot Toys for 2010

Now Playing: The 3 moments of the royal wedding that everyone is still talking about

Now Playing: Officer responding to call about suspicious vehicle killed: Police

Now Playing: Officers engaged in firefight with accused shooter inside school: Police

Now Playing: Vigil planned for Santa Fe community after deadly school shooting

Now Playing: Heavy rains continue along the East Coast with 9 states under flood watch

Now Playing: Prince Philip will be at Prince Harry and Meghan Markle's wedding: Palace

Now Playing: Fissures on Hawaii's big island active again, with lava oozing and bubbling

Now Playing: Jetliner with more than 100 on board crashes during takeoff from Cuba

Now Playing: Suspect in Trump golf club incident may have wanted to 'ambush' officers: Police

Now Playing: Students at site of deadly school shooting had participated in gun violence protest

Now Playing: Explosive items found in and near high school after deadly shooting: Police

Now Playing: Duo comes up with vision to address discarded plastic water bottles in Flint

Now Playing: Amazon Prime set to increase its annual membership fee by $10

Now Playing: Authorities investigating deadly office explosion make arrest

Now Playing: 12-year police veteran in critical condition after neck stabbing

Now Playing: Trump: 'Nothing has changed on North Korea that we know of'

Now Playing: National Guard forced to pull back from checkpoints on Hawaii's big island