Capt. Andrew Nation, 349th Air Refueling Squadron navigator from McConnell Air Force Base, Kan., plots a route prior to take off during a special operations air refueling exercise March 19, 2012, over the northwestern United States. Airmen from the 22nd Air Refueling Wing at McConnell participated in special operations air refueling which is the only KC-135 mission that requires a navigator. (U.S. Air Force photo/Airman 1st Class Armando A. Schwier-Morales)