I don't know if they're proud or not.
But I do know that they have designed a program around a failure rate of 1/100,000 whose empirical failure rate is 1/75.
There is no engineering or production capability that has been created or is planned to back up a complete loss of orbiter fleet every 300 missions.
I grieve for our heros-we can't spare people like that.
But I spit on the politicians and PR artists who have allowed the STS program to become what it is-no, not allowed it to become-demanded that it become what it is.
People, please-honor our heroes but don't mix that up with defending their bureaucrat masters.