Now Playing: Will Roger Stone be pardoned?

Now Playing: ABC News All Access for Feb. 20, 2020

Now Playing: Trauma surgeon discusses gun violence in Chicago

Now Playing: Missy Park contributes $1 million to support US Women’s National Team

Now Playing: Economy rebounding amid pandemic

Now Playing: Celebrating New Mexico as it welcomes visitors back after 1 year

Now Playing: Billionaire tycoon indicted for fraud

Now Playing: Federal moratorium on evictions nears end

Now Playing: Sailor charged in 2020 USS Bonhomme Richard fire

Now Playing: New details of delta variant dangers

Now Playing: Severe storms spawn tornadoes in at least 3 states

Now Playing: Tracking dangerous weather from coast to coast

Now Playing: Tornados, summer storms leave path of destruction in Northeast

Now Playing: New CDC report warns of dangers of delta variant

Now Playing: From high school to the Olympics, these U.S. track athletes have an epic love story

Now Playing: Simone Biles helps open the door to a new culture in sports

Now Playing: Footage shows buildings destroyed after tornado reported near Philadelphia

Now Playing: ABC News Live Prime: Thursday, July 29, 2021

Now Playing: Sen. Bob Casey: ‘Likelihood is very high’ on passing physical infrastructure bill

Now Playing: DC inmate wins neighborhood election from inside prison