If Reg is right about their response, and I would tend to believe him, and he uses direct speech, then I would suggest, GruB, that they didn't give a toss about the dangerous and illegal situation in front of them, or for anyone who might be endangered thereby.
If they were on another task, they could still have called another unit to deal with it.
I mean, if you're travelling somewhere and see a potentially violent incident, do you just ignore it, or do you re-prioritise and stop?