Nope. Cambrian Heights/Huntington. It sound like a helicopter - but I don't think it is a a helicopter. Namely because it's been going on for two plus hours without a break. And there's no helicopter to be seen overhead.
This literally occurs in the Huntington/Thorncliffe area about twice or three times a week. My wife has actually gone outside at 2 AM to investigate, but couldn't figure out the source of it.