At least when we get tent caterpillars they are in small isolated clumps, nothing like that.
Gypsy moth caterpillars have been rough, we have been hitting them with BT and it was finally wet enough this year that the other natural fungi etc. helped knock them back so most of our trees were able to recover. Been a number of oaks that were already drought stressed that didn't make it, I see a number of danger trees on my commute that need to come down. Local tree service just got new trucks and cranes, they are going to be busy for a while.
Our problems aren't as bad as you guys, but I sympathize.