That Army Blackhawk circled Manhattan, circled the area where the blackout occurred yesterday, at 600-1000 feet. Now retracing its path back toward Islip.
LOBO474, WINGS51, WINGS54 and SHADY13 are all flying NE parallel to the East Coast. Type B560. Army + USMC.
I don't know the importance or mission. The primary planefag always follows these; he has a hypothesis about their activity.