A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Steve Nesius

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Thom Baur

Elon Musk receives a standing ovation during remarks after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Joe Skipper

U.S. President Donald Trump and Vice President Mike Pence watch the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft, from Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Steve Nesius

U.S. Representative Matt Gaetz (R-FL) and Florida Governor Ron DeSantis attend President Donald Trump’s remarks after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft, from Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump arrives to watch the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft, from Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump, with Vice President Mike Pence and his wife Karen Pence, watches the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft, from Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump arrives to deliver remarks after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft, from Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump gives a thumbs-up as he arrives to watch the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft, from Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Joe Skipper

SpaceX CEO and owner Elon Musk celebrates after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Steve Nesius

SpaceX CEO and owner Elon Musk celebrates after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Steve Nesius

SpaceX CEO Elon Musk celebrates with his brother Kimbal Musk (in hat) after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Steve Nesius

SpaceX CEO and owner Elon Musk smiles after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Steve Nesius

U.S. President Donald Trump gestures as he speaks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Steve Nesius

U.S. President Donald Trump applauds after delivering remarks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

SpaceX CEO and owner Elon Musk looks on as he celebrates after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Steve Nesius

SpaceX CEO Elon Musk celebrates with his brother Kimbal Musk (in hat) after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Steve Nesius

Secret Service agents stand with U.S. President Donald Trump's limousine backstage at NASA's Vehicle Assembly Building as Trump delivers remarks after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft, from Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump gestures at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

SpaceX CEO and owner Elon Musk celebrates after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Steve Nesius TPX IMAGES OF THE DAY

Elon Musk's brother Kimbal Musk applauds to him at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump speaks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump speaks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump speaks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump speaks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump speaks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

People visit Space View Park before the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA's astronauts Douglas Hurley and Robert Behnken during the NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center, in Titusville, Florida, U.S., May 30, 2020. REUTERS/Scott Audette

A child places his hands on a plaque at Space View Park before the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA's astronauts Douglas Hurley and Robert Behnken during the NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center, in Titusville, Florida, U.S., May 30, 2020. REUTERS/Scott Audette

U.S. President Donald Trump gets on stage in front of a SpaceX Crew Dragon capsule at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY

U.S. President Donald Trump walks to the podium past a SpaceX Crew Dragon capsule at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

NASA astronaut Douglas Hurley gives a thumbs up before the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft at the Kennedy Space Center, in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Joey Roulette

Former NASA astronaut Garrett Reisman holds the sign before the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft at the Kennedy Space Center, in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Joey Roulette TPX IMAGES OF THE DAY

U.S. President Donald Trump speaks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

A child walks at Space View Park before the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA's astronauts Douglas Hurley and Robert Behnken during the NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center, in Titusville, Florida, U.S., May 30, 2020. REUTERS/Scott Audette

U.S. President Donald Trump speaks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

Elon Musk listens during a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump gestures as he gets to the podium at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump speaks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

Elon Musk embraces his brother Kimbal Musk as U.S. House Minority Leader Kevin McCarthy (R-CA) watches at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Thom Baur

Elon Musk gives a small bow of the head as U.S. President Donald Trump congratulates him at the Firing Room Four after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken launches NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Thom Baur

A man wearing a protective face mask attends to view the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA's astronauts Douglas Hurley and Robert Behnken during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center, in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Scott Audette

U.S. Vice President Mike Pence speaks at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Thom Baur

U.S. Vice President Mike Pence walks to the podium past a SpaceX Crew Dragon capsule at a briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

NASA Administrator Jim Bridestine speaks at the briefing after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump and Elon Musk are seen at the Firing Room Four after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump and Elon Musk tour the Firing Room Four after the launch of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft on NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Jonathan Ernst

People meet to watch the launching of a SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA's astronauts Douglas Hurley and Robert Behnken during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center, in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Scott Audette

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA's astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S., May 30, 2020. REUTERS/Scott Audette

A media crew member records as SpaceX Falcon 9 rocket and Crew Dragon spacecraft carrying NASA astronauts Douglas Hurley and Robert Behnken lifts off during NASA's SpaceX Demo-2 mission to the International Space Station from NASA's Kennedy Space Center in Cape Canaveral, Florida, U.S. May 30, 2020. REUTERS/Steve Nesius?