Boeing's Starliner lifts off on its first crewed mission, taking two astronauts to the ISS, a dangerous heatwave is threatening millions from California to Texas, Hunter Biden's ex-wife testified in his federal gun trial, and more in tonight's broadcast.

21 million people under heat alerts amid record-shattering temperatures; Biden evokes D-Day heroes in a speech about threats to democracy; Clarence Thomas acknowledges trips with a billionaire in financial disclosure; and more on tonight's broadcast.