One way to understand the success or failure of management at any company is to look at employee comments.
Many companies encourage, and take seriously, employee critiques of management. Sometimes, these critiques come with employee names attached, which leads to brown-nosing more than honesty. More often, in well-run companies, there are avenues for serious and honest anonymous critiques of management.
Sandia management is paranoid enough that it doesn’t allow either. But web sites like Glassdoor.com do let current and former employees provide sometimes honest evaluations of how a company is run and what it is like to work there. And there are over 330 evaluations of Sandia on that web site.