What is worse, it is not even clear that the captain is entirely wrong here.

If Clemans screwed up, he had the potential to have 911 calls be routed to /dev/null. If he succeeded, the department became more efficient. However the 911 system is already working "well enough". Therefore in terms of outside perception any win will be small, and disasters could be huge.

He is not the one who has been give the authority to make this kind of risk decision. The captain is. If Clemans screwed up, the captain would be the one getting fired. Keeping the captain out of the loop is irresponsible. It doesn't matter that it worked. It doesn't matter how good the system is. You need to work with stakeholders, and not behind their backs.

However Clemans seems like the kind of person who can never understand this point.