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KC-135 Stratotanker doing an Aerial Refueling to a US Northrop Grumman B-2 Spirit over Salt Lake City in USA. The Northrop Grumman B-2 Spirit (also known .
Aerial refueling, also referred to as air refueling, in-flight refueling (IFR), air-to-air refueling (AAR), and tanking, is the process of transferring fuel from one aircraft .