Roughly 9,900 kilometers one way under a 32 tonne bomb load? Yep, Four topoffs. We NEED more tankers.

H.

   

Well the way it works is they keep enough fuel in the planes to reach a landing spot at all times. Not like a car where you drive to 1/4 of a tank then get gas. They run out cost allot and maybe a crew. That's why some fighter ferry flights they refuel 20 times.