Read more: https://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/197385/first-air-to-air-refueling/#:~:text=The%20first%20successful%20aerial%20refueling%20took%20place%20on%20June%2027,flying%20beneath%20it%20carrying%20Lts.