Thanks for the report and kudus to Tom Kelly.
I dont think it matters much whose fault it was if any, what matters is why none of them was flarm equiped and why we even allow this in contests. After all, a big group of people donated money to offer rental units to those who otherwise insist they don't need it (either since they always fly alone and no one can possibly be in the same area as they do, or because they are super human who can detect any threat even from behind)

Ramy