A half step down, a whole step up
U.S. Air Force Master Sgt. John Del Valle, 693rd Intelligence Support Squadron operations section chief, is an avid jazz enthusiast and spends his after duty hours mastering the bass guitar. Del Valle toured with the Air Force Tops in Blue in 2006 which reignited his passion for music. (U.S. Air Force photo by Senior Airman Devin Boyer)

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Photo by: Senior Airman Devin Boyer |  VIRIN: 171020-F-EQ901-0026.JPG