4th generation formation
A formation of 4th generation fighter jets from the 40th Flight Test Squadron flies near Eglin Air Force Base, Fla., Jan. 31, 2022. The 40th FLTS executes developmental flight tests for fourth-generation fighter aircraft, including the A-10, F-15 and F-16. (U.S. Air Force photo by Tech. Sgt. John Raven)

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Photo by: Tech. Sgt. John Raven |  VIRIN: 220131-F-AY943-0002.JPG