Now Playing: White House sides with cruise industry after CDC order

Now Playing: Airline industry braces for mass layoffs, furloughs

Now Playing: Head of the FAA piloted a Boeing 737 Max after deadly crashes

Now Playing: Fast-moving wildfire races across Napa, California

Now Playing: Airports deploy dogs trained to sniff out coronavirus

Now Playing: Cruises making a comeback during COVID-19

Now Playing: Disney's Animal Kingdom announces 3 rhinos are expecting at park

Now Playing: Cruise line's extraordinary measures to set sail again

Now Playing: Tropical Storm Beta bears down on Texas coast

Now Playing: Last-minute deals entice travelers

Now Playing: Biggest US cruise line cancels trips into 2021

Now Playing: Report on Boeing cites ‘culmination’ of failures

Now Playing: How United Airlines says it keeps cabins COVID-free

Now Playing: Tropical Storm Sally takes aim at the Gulf Coast

Now Playing: Elderly passenger kicked off flight for arguing

Now Playing: Dangerous heat wave scorches the West Coast

Now Playing: Travel on a virtual vacation

Now Playing: RV rentals boom as Americans seek out new travel options amid pandemic

Now Playing: Couple gets luxury wedding surprise after changing plans due to pandemic