If the KC-135s are indeed still in service in the 2050s, “that timeline would put the KC-135’s service life near 100 years,” Air & Space Forces Magazine reported. That’s a long time.

The Boeing KC-135, nicknamed Stratotanker is an aerial refueling aircraft that has been in continuous service with the USAF for over 60 years with over 800 examples of the C-135 series built.