Confirmed with Paradise Twp municipal secretary, DCNR, and the person in charge of gypsy moth spraying...the helicopter activity in our area is due to DCNR spraying for gypsy moths. They use Bacillus Thuringiensis Kurstaki (BTK), a biological pesticide that targets caterpillars in a very particular stage of development. They're spraying trees, not meadows. That was just an FYI.
Related:
https://www.barrettcommunity.com/local-news/why-are-we-spraying-for-caterpillars