U.S. Ambassador to the Republic of Bulgaria visits during Thracian Viper 20
Rumen Radev, president of Bulgaria, left, receives a Triple Nickel squadron patch from two U.S. Air Force pilots assigned to the 555th Fighter Squadron during Thracian Viper 20 at Graf Ignatievo Air Base, Bulgaria, Sept. 24, 2020. Thracian Viper 20 is a multilateral training exercise with the Bulgarian air force, aimed to increase operational capacity, capability and interoperability with Bulgaria. (U.S. Air Force photo by Airman 1st Class Ericka A. Woolever)

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Photo by: Airman 1st Class Ericka A. Woolever  |  VIRIN: 200924-F-ZX177-1455.JPG