Sheppard in Photos
Airman 1st Class John Racieu, 361st Training Squadron aerospace propulsion apprentice course student, installs an oil cooler flap actuator. The actuator regulates the amount of airflow that goes through the oil cooler. (U.S. Air Force photo by Senior Airman Robert L. McIlrath)

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Photo by: Senior Airman Robert L. McIlrath |  VIRIN: 171102-F-ZC626-0072.JPG