Part of being a leader is taking responsibility for the actions of those you are in charge of. Obviously it wasn't an executive who failed to properly install b

Part of being a leader is taking responsibility for the actions of those you are in charge of. Obviously it wasn't an executive who failed to properly install bolts, which is the proximate cause of the failure, but someone above the worker should have noticed the missing bolts when they were doing the documentation, someone above that should have noticed the missing documentation when they were auditing, and someone above that should have noticed the missing audit, and so on and so forth up the ladder until you get to an executive that doesn't have someone doublechecking their work. Now maybe the problem was noticed and an executive did take action but for some reason a subordinate deceived their superior into thinking they were following the directions when they weren't, but that seems at best highly unlikely. Even if that is what happened, the deception would have to be very elaborate for the executive to not be responsible for independently verifying that their orders were being properly followed. For better or worse, you don't get to take credit for the successes of those beneath you without also taking the blame for their failings.