US Air Force Flies the Most Modern Aircraft (But Trains with 42 Year Old Planes)

Yes, you read that correct. 

Fighter pilot and standing hi-res stock photography and images - Alamy

US approves sending F-16s to Ukraine from Denmark and

Train Like You Fight: Updating America's Adversary Fleet - War on

The United States Army Buys Its First Aeroplane, 1909 – The Text

F-16 Block 70/72: All you need to know about the most advanced

Endless incredible aircraft at the National Museum of the United

WTF? — Captured Enemy Aircraft — Vintage Wings of Canada

i.ytimg.com/vi/a9Nmy3ZRVHE/maxresdefault.jpg

F-16s for Ukraine: Why Kyiv would still face big hurdles in using

The Last Gunslinger, Air & Space Magazine