The course metioned is called Flying in the Wire Environdment, taught by Utilities Aviation Specialists.
www.helicoptersafety.com It is taught many times yearly in the US, Canada, NZ, Australia, and occasionally in other places including the HAI and HAC.
The other thing the course would call out in this situation would be to perfrom a full orbital recon when going into any off air airport/heliport/LZ for the first time. Even if it appears to be fairly open.