319th ARW completes final PE/ISO
Col. Don Shaffer, 319th Air Refueling Wing commander, screws on the last panel of a KC-135 Stratotanker July 20 on Grand Forks Air Force Base, N.D., during a ceremony held to celebrate the completion of the final periodic isochronal inspection. More than 40 Airmen participated in the final PE/ISO. (U.S. Air Force photo by Staff Sgt. R. Michael Longoria)