SpaceX has been using supercooled propellants (and "load-and-go") for every launch since early 2016, including NASA cargo launches. It's been used over thirty

SpaceX has been using supercooled propellants (and "load-and-go") for every launch since early 2016, including NASA cargo launches. It's been used over thirty times by now. Whatever additional assurance that NASA's advisory board wants, another few launches are unlikely to provide it.