It's the US Air Force's 75th Anniversary: Take a Look at the Aircraft It's Flown - CNET[ Sun, 18 Sep 2022 14:53:55 +0000 ]Sunday marks 75 years for the Air Force. Here are its high-flying craft, from the sound barrier-shattering X-1 and the superfast SR-71 to today's cutting-edge F-35 and the upcoming B-21.