ERTs ARE NOT ANTAGONISTS. THEY ARE THERE TO HELP THE STATION.
If you are selected for an ERT, you are to follow your objective and help the station.
If you are a crew member, you are not to attack or treat ERTs as antagonists or deathsquads.
We currently do not have the ability to ban people specifically from ERTs, so if you fuck up as one you'll probably just get banned for a day or two. So don't be a dick and do your job.