So how does the KC-767 refueling system work?
And if the fuelling system is not enough to impress anyone, anyone would definitely be amazed with the control mechanism of the Boeing KC-767. This aircraft is operated using a joystick! The operator can have complete control on the movements of the Boomer by video that is transmitted from a number of small cameras which are attached to various parts of the rear fuselage of the tank. The aircraft also comes equipped with a camera system that is capable of sending images in HD to vision goggles that are worn on the helmet of the Boomer so that there is a clear, high definition image right through the refueling process. With all the advanced technology that is used in these aircraft, it is believed that this next generation tanker is all set to replace the US fleet of KC-135E.
Source: https://www.fastaviationdata.com/boeing-kc-767-a-next-generation-tanker-like-no-other/