The picture across the top of this site is of the aircraft I flew in the Marines, a Sikorsky CH-53E Super Stallion, refueling in flight from a C-130 Hercules. In-flight refueling in a helicopter is a delicate operation. More than a few pilots have earned new call signs by cutting off the refueling probe. There’s a picture here that shows just how close the two aircraft are during the refueling process.