Space Exploration Technologies Corp.’s dress rehearsal for manned space flights this summer is aimed for March 2, when Space X’s s Crew Dragon is slated to launch an unmanned demonstration flight from Kennedy Space Center’s historic Launch Pad 39A, NASA announced Wednesday.

It’s a dry run for a targeted July mission taking astronauts to the International Space Station. It will be the first time commercial flights designed for humans dock at the space station.

Earlier launches had been postponed as testing continued and amid a partial government shut down.

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