Night SAR in the Grand Canyon........ another accident waiting to happen I'd have thought
Apart from the brown-out dust conditions for landing, nothing special - big terrain and low light levels but nothing to prevent SAR there - certainly better than having to wait for daylight to be extracted, they were there for 8 or 9 hours.
RIP for those that didn't make it and condolences to those who did and lost family or friends - very tragic.