While the Victors deployed to Ascension , their normal refuelling mission in the air was undertaken by United States Air Force Boeing KC - 135 Stratotankers .
Each was refuelled by another Victor before leaving UK airspace .
While the Victor deployed to Ascension , Victor 's normal refuelling mission in the air was undertaken by United States Air Force Boeing KC - 135 Stratotankers .
Each was refuelled by another Victor before leaving UK airspace .