My point precisely. They are just average people who do their jobs. Some of them are incompetent, some of them have their own agendas. As do private sector employees. I would suggest to you, however, that it is much more difficult for a public sector employee to be fired from a government job for incompetence or or due to poor job performance than it is for a private sector employee to be terminated for the same reasons.
What could a lower-level person have at stake by disclosing the whole truth? Please....
I dodn't think that the accident investigators have enough at stake to need a reason to lie to us.