Same here, I've made some huge fuck ups in my time at Amazon, one of which I was pretty new and assumed I would be fired for; but one of the principal engineers on my team told me not to worry, these things happen and it's a blameless process where we're just trying to get to the root cause of the problem and ensure it never happens again; and it was exactly as he said. The CoE we presented said "An engineer from the xyz team..." and never mentioned a name once.