More than 130 Airmen from the Kentucky Air National Guard’s 123rd Maintenance Group completed a week of intensive aircraft maintenance training at Muñiz Air National Guard Base in Carolina, Puerto Rico, on June 16, 2021. The annual field-training course is called Maintenance University. (U.S. Air National Guard photo by Phil Speck)

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Photo by: Master Sgt. Phil Speck |  VIRIN: 210616-Z-JU667-0070.JPG