I've read the book. Interesting reading.... I was surprised to learn that they were already investigating an issue that, in the end, killed the crew. This is why the guy really tried to stop the launch....

Where are they today I wonder?

They all had twins 🤷‍♂️

On a gun range, anyone can call “cease fire!” when they see potential danger. The shooting stops, and the trouble gets investigated. When an engineering organization is not able to do this, it is not being run by the engineers.