DE-ICING An Air National Guard crew chief de-ices a KC-135 Stratotanker on Selfridge Air National Guard Base in Harrison Township, Mich., Feb. 4, 2015. The crew chief is assigned to the 191st Air Refueling Group. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 583866-M-ROD58-351.jpg Photo Gallery