Good thoughts Devil 49,
I was thinking about same. EMS operation should separate from other operations and it needs own SOP. It has so much differences. Night flying is different world and especially with (hopefully) NVG's. Like its been told many times, NVG's are not X-rays. You still need to have approved and good weather limits. Also crew coordinator should be included in that SOP. If operated in one pilot, somebody else must use radios between accident scene/other rescue crews. No pilot. There are many other things also, but main thing is that all is published.
