Your grandparents could have flown the same airframe still refuelling US jets today: KC-135R 57-1419 was built in 1957 and is in its 67th year of service

Think about the oldest working machinery you encounter in daily life, perhaps a vintage train or a well-kept mid-century elevator. Now, imagine a heavy, high-performance military aircraft from that same era flying thousands of feet in the air, pushing through extreme turbulence, and passing thousands of gallons of explosive jet fuel to modern stealth fighters.

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