It's not just Starliner that is going to have it's maiden crewed flight but also the Atlas V rocket that will take it to orbit has never been used on a manned f

It's not just Starliner that is going to have it's maiden crewed flight but also the Atlas V rocket that will take it to orbit has never been used on a manned flight (though early variants of Atlas were used in the Mercury program in the 1960s).