Now Playing: Person of the Week: Waiting for Superman

Now Playing: Person of the Week: Sweet Surprise for Soldiers

Now Playing: Homeless Man Finds $3,300 Cash, Returns It

Now Playing: A pilot ejected from an F-16 fighter jet that caught fire during takeoff of a training flight

Now Playing: Police officer on duty at a Michigan airport is stabbed repeatedly in the neck

Now Playing: Police officer is found not guilty after a deadly shooting in Milwaukee last summer

Now Playing: Several states along the Gulf Coast declare state of emergency

Now Playing: The heat wave in the western part of the US is shattering records

Now Playing: Former Homeland Security chief testifies on Capitol Hill, detailing how Russia meddled in the 2016 Presidential election

Now Playing: A look at the best summer deals for flights and rental cars

Now Playing: Funeral for a Muslim teen killed in Virginia; investigators are calling it a case of road rage

Now Playing: One little girl has reason to smile as she graduates from kindergarten

Now Playing: Explosions and gunfire at train station in Brussels

Now Playing: Tropical storm forms in the Gulf of Mexico

Now Playing: Polls close in Georgia special election

Now Playing: Video released from dashboard camera in Philando Castile shooting

Now Playing: OJ Simpson's parole hearing scheduled for July 20

Now Playing: Over a dozen people injured on United Airlines flight due to turbulence

Now Playing: Russian fighter jet flies within feet of a US Air Force reconnaissance plane

Now Playing: Senate Republicans race to repeal and replace Obamacare