SpaceX crewed flight is ‘go for launch’: NASA chief

SpaceX's historic first crewed launch was set to proceed as scheduled Wednesday, NASA announced at midday, but some uncertainty remained over weather conditions just over four hours before takeoff. "We are go for launch!" tweeted NASA chief Jim Bridenstine. "SpaceX and @NASA will continue monitoring liftoff and downrange weather as we step into the countdown. We are proceeding