Helicopter or drone?

Around midnight on Dec 24/25th a really weird-sounding flying machine went over our house in Havertown. It didn’t sound like a helicopter. We get plenty of those, we are familiar with their sound. This thing was moving fast, though, so if it was a drone they are speedy buggers. Big white light. Flying low. Are there new military helicopters or something? I didn’t think the Jersey drones were so quick?

Anyone else hear or see it?