[MLeake]

I would suggest to you that your statement is situationally dependent.

If police are on scene, in most cases they will not want such assistance, you are right.

OTOH, I am pretty sure most cops would prefer that, if able, a person stop a rape or a child abduction rather than just wait to give a police report. Most police chiefs will not say that, of course, but some sheriffs and most patrol cops and detectives that I know will.

There is the school of thought that one should only be a good witness.

There are scenarios where being a good witness would be my choice.

Rapes, child abductions, assaults on the elderly... those do not fall into that category.