If you want people to catch rats to curb the rat problem and you pay for rat tails, people end up lopping tails off rats and releasing them so they can breed and provide future income.
It's not as simple as making sure that TSA management has the right desired behavior out of agents.
"Dorner issued a single demand: a public admission by the LAPD that his termination was in retaliation for reporting excessive force. He also asked journalists to pursue "the truth", pointing out specific lines of investigation for reporters to follow under the Freedom of Information Act, and said that "video evidence" was sent to multiple news agencies."[1]
[1] https://en.wikipedia.org/wiki/Christopher_Dorner_shootings_a...
Usually I don't side with people who go on murderous rampaged but Dorner went on his rampage because he was pissed off by the LAPD's use of excessive force.
The accountability lies with their superiors. They are brhaving the way their superiors want them to.