How do these cameras prevent those crimes?
I'm sure there's a million other reasons why people don't want this job, but this reflects in how harsh you can be on (new) agents.
Don't make excuses for them. If you're legally allowed to kill people on purpose, you (should) get oversight and tight constraints. We don't because of a lot of reasons, but we should
They get paid six figure salaries for not actually doing a whole lot, they can manage.