Starliner's first attempt to go to the ISS in 2019 had resulted in failure. However, Boing is now ready for its second test flight on July 30th. The Starliner will be mounted atop Atlas V rocket; and there will be no crew inside. NASA and Boing are testing Starliner's capabilities. NASA is aiming to have Boing's Starliner along with SpaceX's Crew Dragon ready for ferries to the International Space Station.