With the acquisition of KC-97 Stratotankers from Strategic Air Command, the 104th was transferred back to Tactical Air Command in September 1969 and the 106th became an air refueling group. Its mission was to provide aireal refueling to tactical fighters. With the KC-97 being a variant of the C-97 Stratofreighter the conversion of the unit from transports to refueling aircraft was easily accomplished, the squadron receiving the KC-97Ls with addition of jet engine pods mounted to the outboard wings. It rotated personnel and aircraft to West Germany as part of Operation Creek Party, a continuous rotational mission flying from Rhein Main Air Base, West Germany, providing air refueling to United States Air Forces in Europe (USAFE) tactical aircraft. The success of this operation, which would continue until 1972, demonstrated the ability of the Air National Guard to perform significant day-to-day missions without being mobilized.