"What helps us get to the moon? Well, for sure, rendezvous and docking with one or ideally both landers, that gives you an opportunity to do some integrated testing of a vehicle that we are going to depend upon the following year to take those astronauts down to the surface of the moon," Isaacman told CBS News.
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The civil rights leader, who ran for president twice in the 1980s, leaves a lasting legacy.