The 135 boom operator gave me a bit of info while we were there. They truck the drogue around with them, it was strapped down in the aft section of the plane, but like was said, it has to be put on prior to flying. Then it just hangs off the plane, approximately 6 feet. It was a hard drogue, supposedly the KC-10's have soft drogues, said they were less dangerous. Also, 135's can't carry pods on the wings like KC-10's, according to them, only fuel from the aft section. And last but not least, I'm supposed to pass to my buddies that there is indeed, NO WAY to lock the boom, so quit asking
